Safety Knowledge Multiple-Choice Questions [One Question per Day 20090226]
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Since I have some matters to attend to early tomorrow, and I don’t want to prevent fellow sea enthusiasts from participating in the daily question quiz, the question for February 26, 2009 is being released ahead of time! 1. Among all the stages in the life cycle of mechanical products, the most critical stage that determines the safety of such products is __________. A: Design B: Manufacturing C: Use D: Maintenance 2. Taking the plane where the operator is positioned as a reference, for all mechanical processing equipment, any movable parts and components of the transmission mechanisms that are within a certain height range, as well as their hazardous areas, must be equipped with protective devices. A 2m B 2.5m C 3m D 3.5m 3. Whenever the operator’s working position is above ______ of the falling reference level, a platform for standing and fall prevention guardrails must be installed on the production equipment. A 0.5m B 2m C 2m D 3m 4. When the wear on the critical cross-section of the crane’s hook reaches _______ of its original size, it should be scrapped promptly; it is absolutely not acceptable to use welding to increase the cross-sectional area. A 50% B 30% C 10% D 5% 5. The safe service life of a crane depends mainly on the number of years it can operate without suffering damage. The crane should be scrapped when its main load-bearing components suffer irreversible overall instability. A: Working mechanism; B: Fragile components of the mechanism; C: Metal structure; D: Electrical equipment. This post was last edited by hw197358 on 2009-2-25 at 21:05.]
1. Among all the stages in the life cycle of mechanical products, the most critical stage that determines the safety of such products is ____A ______. A: Design B: Manufacturing C: Use D: Maintenance 2. Based on the plane where the operator is positioned, protective devices must be installed on all movable parts and components of the transmission mechanisms of mechanical processing equipment that are within height A, as well as on their hazardous areas. A 2m B 2.5m C 3m D 3.5m 3. Whenever the operator’s working position is __A ____ above the falling reference level, a platform for standing and fall prevention guardrails must be installed on the production equipment. A 0.5m B 2m C 2m D 3m 4. When the wear on the critical cross-section of the crane’s hook reaches ___C____ of its original size, it should be scrapped promptly; it is absolutely not acceptable to use welding to increase the cross-sectional area. A 50% B 30% C 10% D 5% 5. The safe service life of a crane depends mainly on the number of years it can operate without suffering damage, that is ___C____. The crane should be scrapped when its main load-bearing components suffer irreversible overall instability. A Working mechanism B Vulnerable components of the mechanism C Metal structure D Electrical equipment
1\ Among all the stages in the life cycle of mechanical products, design is the most crucial factor determining the safety of such products. 2\ With the plane where the operator stands as a reference, protective devices must be installed on all movable parts and components of transmission mechanisms, as well as on any hazardous areas, in machining equipment that are within a height of 2 meters. Where the operator’s working position is more than 0.5 M above the falling reference level, a standing platform and fall prevention guardrails must be installed on the production equipment. When the wear amount of the critical cross-section of the crane’s hook reaches 10% of its original size, it should be scrapped promptly; it is absolutely not permissible to use welding repairs to increase the cross-sectional area. The safe service life of a crane mainly depends on the number of years during which its C-metal structure remains undamaged. The crane should be scrapped when its main load-bearing components suffer irreversible overall instability.
Answer: 1.A 2.A 3.A 4.C 5.C
1. Among all the stages in the life cycle of mechanical products, the most critical stage that determines the safety of such products is _____A_____. A Design B Manufacturing C Use D Maintenance 2. Based on the plane where the operator is positioned, for all mechanical processing equipment, any movable parts and components of transmission mechanisms that are within height (A), as well as their hazardous areas, must be equipped with protective devices. A 2m B 2.5m C 3m D 3.5m 3. Whenever the operator’s working position is above the falling reference level by ___A___, a platform for standing and fall prevention guardrails must be installed on the production equipment. A 0.5m B 2m C 2m D 3m 4. When the wear on the critical cross-section of the crane’s hook reaches ___C____ of its original size, it should be scrapped promptly; it is absolutely not acceptable to use welding to increase the cross-sectional area. A 50% B 30% C 10% D 5% 5. The safe service life of a crane depends mainly on the number of years it can operate without suffering damage, that is _____C__. The crane should be scrapped when its main load-bearing components suffer irreversible overall instability. A Working mechanism B Vulnerable components of the mechanism C Metal structure D Electrical equipment
1A 2A 3A 4C 5C
My answer is aaacb
It should be 1A2A3A4C5C
1. Among all the stages in the life cycle of mechanical products, the most critical stage that determines the safety of such products is _____ A _____. A Design B Manufacturing C Use D Maintenance 2. Taking the plane where the operator is positioned as a reference, for all mechanical processing equipment, any movable parts and components of transmission mechanisms that are within a height of __A __ must be equipped with protective devices. A 2m B 2.5m C 3m D 3.5m 3. Whenever the operator’s working position is above ___ B ___ of the falling reference level, a platform for standing and fall prevention guardrails must be installed on the production equipment. A 0.5m B 2m C 2m D 3m 4. When the wear on the critical cross-section of the crane’s hook reaches ____C___ of its original size, it should be scrapped promptly; it is absolutely not acceptable to use welding to increase the cross-sectional area. A 50% B 30% C 10% D 5% 5. The safe service life of a crane depends mainly on the number of years it can operate without suffering any damage____C___. The crane should be scrapped when its main load-bearing components suffer irreversible overall instability. A Working mechanism B Vulnerable components of the mechanism C Metal structure D Electrical equipment
It should be A A A C C
1A 2A 3A 4C 5C
1a 2a 3a 4c 5c Safety Production Technology from the Exam Guide for Certified Safety Engineers written by Song Dacheng
1、A 2、A 3、A 4、C 5、C
1、A 2、A 3、A 4、C 5、C
My choices: 1、A 2、A 3、A 4、C 5、C
1、A 2、A 3、A 4、C 5、C
My answer is: 1 A； 2 A ； 3 A ； 4 C ； 5 C.
Answer: A Design. Answer: A 2m. Answer: A 0.5m. Answer: C 10%. Answer: C Metal structure