輪機(jī)英語單項(xiàng)選擇題每日一練(2019.12.27)

來源：考試資料網(wǎng)

1 （） provide the water to the pistons.

2 （）does not belong to the mooring trial item.

3 While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface you would, therefore, suspect that （）

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4 The frequency output of an operating alternator is controlled by the （）.

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5 When the vessels steering wheel on the navigation bridge is turned, the difference existing between the position of the wheel and that of the rudder is known as （）.

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