[Daily Question 20090225] Questions about materials will test you
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1. 1Cr18Ni9Ti stainless steel represents ( ) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium, containing 1.5% nickel 2. The role of Mn in 16Mn low-alloy steel is ( ) (A) Increases the strength of steel (B) Reduces the hardness of steel (C) Has oxidizing ability (D) Increases the harmful effects of S and P 3. Characteristics that are not copper wires are ( ) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. Wires with smaller resistivity are ( ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to ( ) of the medium to be measured. (A) Physical properties (B) Chemical properties (C) Operating conditions (D) Answer to the above: AADAD This post was last edited by liwei2002 on 2009-2-26 11:09 ]
1. 1Cr18Ni9Ti stainless steel means (c) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low alloy steel is (a) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (d) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (a) ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to (d) of the measured medium. (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1A 2A 3D 4A 5B
1c 2a 3d 4a 5d
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (C) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to the measured medium (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
my answer: 1A 2A 3D 4A 5D
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (d) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to the measured medium (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1,A 2,A 3,D 4,A 5,B
1. 1Cr18Ni9Ti stainless steel means (a) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The role of Mn in 16Mn low alloy steel is (a) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (d) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. Wires with smaller resistivity are (a) . (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to (d) of the measured medium. (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1A 2A 3D 4A 5D
1A 2A 3D 4A 5D
1.A 2.A 3.D 4.A 5.ABC or D
1,A 2,A 3,D 4,A 5,B
1,A 2,A 3,D 4,A 5,B
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The role of Mn in 16Mn low-alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (C) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) ). (A) Copper conductor (B) Aluminum conductor (C) Iron conductor (D) Copper core aluminum conductor 5. The selection of pressure tube is related to the medium being measured (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1. 1Cr18Ni9Ti stainless steel means (a) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The role of Mn in 16Mn low alloy steel is (a) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (d) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. Wires with smaller resistivity are (a) . (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to (d) of the measured medium. (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1a 2a 3d 4a 5d
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (C) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to the measured medium (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (C) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) ). (A) Copper wire (B) Aluminum wire (C) Iron wire (D) Copper core aluminum wire 5. The selection of pressure tube is related to the measured medium (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three
1. 1Cr18Ni9Ti stainless steel means (A) (A) A contains 0.1% carbon, 18% chromium, 9% nickel, and less than 1.5% titanium (B) B contains 0.1% chromium, 18% nickel, and 9% titanium (C) C contains 1% carbon, 1.8% chromium, 8% nickel, and 1.5% titanium (D) D contains 18% carbon , containing 9% chromium and 1.5% nickel 2. The function of Mn in 16Mn low-alloy steel is (A) (A) Increase the strength of steel (B) Reduce the hardness of steel (C) Have oxidizing ability (D) Increase the harmful effects of S and P 3. What is not a characteristic of copper wires is (D) (A) Good electrical conductivity (B) Easy to process (C) Easy to weld (D) Smaller density than aluminum 4. The wire with smaller resistivity is (A) . (A) Copper conductor (B) Aluminum conductor (C) Iron conductor (D) Copper core aluminum conductor 5. The selection of pressure tube is related to the medium being measured (D). (A) Physical properties (B) Chemical properties (C) Operating conditions (D) The above three