輪機(jī)英語船舶電氣與船舶安全單項(xiàng)選擇題每日一練(2019.01.17)

來源：考試資料網(wǎng)

1 Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）

2 The in the steering gear move the rudder to the required angel（）

3 This arrangement is （） if the elements are directly connected to one another and the control action takes place without human involvement.

4 What determines the number of events occurring in a cycle of operation in an internal combustion engine?（）

5 The （）is used to measure power.