轮机英语【二三管】题库 单选题 1分 A fire involving aluminum powder would be a class____ A. A?fire B. B fire C. C fire D. D fire 点击查看答案 进入题库练习 参考答案: D 你可能感兴趣的试题 1 单选题 1分 Electrical leads and insulation on a motor should be painted with A..heat-resisting acrylic(丙烯酸的) B..heat-resisting aluminum C..insulating varnish D..insulating white lead 点击查看答案 2 单选题 1分 Which of the following precautions must be taken electric impression heater is used to keep the coolant in a diesel engine during the time the engine is secured? A. .the coolant temperature must be maintained at 180°c B. .the thermostatic bypass valves must be manually opened before the engine is started C. .the pressure cap must be removed while the ?? D. .electrical power to the heater must be secure 点击查看答案 3 单选题 1分 If separating effect of the oily water separator is not good .we can improve it by ____ A. .flushing separator with cold water B. .increasing bilge water supply flow C. .heating oily water properly D. .opening manual oil discharge valve 点击查看答案 4 单选题 1分 Which problem can occur if the brake band lining of a wildcat brake becomes excessively worn? A..the driving engine will over-speed B..the anchor will immediately drop C..the clutch will overheat D..the brake’s effectiveness will be reduced 点击查看答案 5 单选题 1分 Centrifugal separators can be arranged ____ to attain a higher throughput A..in series B..in parallel C..independently D..in series or parallel 点击查看答案