1. [单选题]示位标该装置的总重量(total weight)不超过：
A. 5公斤
B. 8公斤
C. 10公斤
2. [单选题]船舶“五好”设备的条件是______。Ⅰ、运转性能好；Ⅱ、经济效益好；Ⅲ、部件完整好；Ⅳ、装配调整好；Ⅴ、维修保养好；Ⅵ、资料完整(complete data)好；Ⅶ、使用性能好。
A. Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ
B. Ⅰ+Ⅲ+Ⅳ+Ⅴ+Ⅵ
C. Ⅱ+Ⅲ+Ⅳ+Ⅴ+Ⅵ
D. Ⅲ+Ⅳ+Ⅴ+Ⅵ+Ⅶ
3. [单选题]For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by
A. moving the governor control to stop
B. shutting off the lubricating oil supply
C. tripping the governor emergency stop lever
D. shutting off the fuel supply
4. [单选题]活塞头部触火面裂纹主要是由_______引起的
A. 热应力
B. 机械应力
C. 应力集中
D. 过热
5. [单选题]救生筏上备有海锚：
A. 2只
B. 3只
C. 4只
D. 5只
