輪機(jī)英語單項(xiàng)選擇題每日一練(2019.08.11)

來源：考試資料網(wǎng)

1 The tube in a boiler should be blinded if found （）.

2 The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by（）

3 Defective air cooler in a diesel engine will lead to （）.

4 Distilled water from an evaporator may be discharged into a potable water tank （）.

5 Tools with （）handles should be used to check electric circuit.