[Oil Transport Quiz with Prizes] 110

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Multiple-choice question. 5 questions per day; 2 wealth points for answering one question correctly, and an additional 10 wealth points if all questions are answered correctly. To prevent some members from copying other members’ answers, please hide your posts when answering questions. To hide the method, click here: Hide Method. Answers using the same IP are valid only for the first post. Also, be careful when posting; edits are invalid! 1. One fluid flows into the tube through the inlet header and then exits through the outlet header and the connecting pipe, while another fluid enters the heat exchanger via the connecting pipe on the housing; this type of heat exchanger is called a ( ) heat exchanger. (A) Shell-and-tube type (B) Tube array type (C) Tube sheet type (D) Hybrid type. 2. During the operation of the boiler, if the pressure indicated by the pressure gauge is 0.2 MPa, then its equivalent absolute pressure is ( ) blPa. (A)0.1 (B)0.2 (C)0.3 (D)0.4 3. A boiler is a ( ) device. (A) Power (B) Electricity (C) Machinery (D) Hydropower 4. The main working medium in current steam power plants is ( ). (A) Flue gas (B) Gas (C) Water vapor (D) Air 5. Among the following substances, ( ) has the highest thermal conductivity. (A) Water (B) Copper (C) Air (D) Wood Answer key: A C A C B