1、word资料下载可编辑天津八套与海事局八套题库（一）1.The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in_____of operation are immediately implemented. A. fore and aft B. ahead or astern C. speed or direction D. u
2、p or down 2.Small oil spills on deck can be prevented from contaminating any waters by_____. A.plugging all scuppers and drains B.thoroughly draining all bunkering hoses C.regularly emptying all drip pans D.placing floating booms around the ship 3.Th
3、e main purpose of warming up the main engine is_____. A. to reduce heat stress B. to reduce low temperature corrosion C. to improve firing and starting performance D. for fuel saving 4.In order to reduce the chance of detentions ships should routinel
4、y verify the following except for_____. A.fan damper operation is smooth and operates through the full range of open to close. B.fan damper locking pins are free to be removed without significant effort. C.fan damper operating handles are free to mov
5、e without significant effort. D.fan damper are properly coated with white paint. 5.The purpose of the_____in a vapour compression cycle is to accept the hot, high-pressure gas from the compressor and cool it to remove first the superheat and then the
6、 latent heat. A.expansion valve B.condenser C.compressor D.evaporator 6.The energy consumed by an AC motor, as strictly reactive power, is_____. A.used to do mechanical work 专业技术资料word资料下载可编辑B.lost in doing work to turn the motor itself C.used to est
7、ablish the magnetic field of the motor D.lost as heat generated by the windings. 7.A diesel engine will lose power if fuel injection occurs too early because the_____. A.fuel will not be properly atomized in the cylinder B.maximum fuel expansion will
8、 occur on the compression stroke C.ignition will be delayed due to low ignition temperature D.fuel will ignite before top dead center 8.The designed_____is 20 tons per day, but the fresh water generator can only distill 15 tons at present. A.power B.
