輪機(jī)英語船舶動力裝置單項(xiàng)選擇題每日一練(2019.01.19)

來源：考試資料網(wǎng)

1 Cooling enables the engine metals （） their mechanical properties.

2 The loss of （） from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.

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3 Which of the following may take place if the clearance of the main bearings are excessive?（）

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4 When a crankshaft has to be handled outside the engine, it should be carefully supported in a manner which will avoid （） high bending moments on it.

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5 Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.

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