航海英語船舶動力裝置單項選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 On a single-screw vessel the stern frame（）.

2 A hydraulic accumulator aboard a ship is designed to（）.

3 What is the purpose of the intake/exhaust valves in a diesel engine? （）

4 A thrust block is designed to（）.

5 Sudden unloading of a diesel engine can cause（）.