輪機(jī)英語(yǔ)船舶輔助機(jī)械單項(xiàng)選擇題每日一練(2019.01.19)

來(lái)源：考試資料網(wǎng)

1 If your vessel bums 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 18 knots?（）

2 In a （） boiler the water flows through the inside of the tubes while the hot gases pass around the outside.

3 The single acting cylinder is the simplest form where pressure is applied to the full area of the piston head to move the load through piston rod extensionThe load causes rod （） when the drive pressure is released.

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4 If the head pressure of a reciprocating refrigeration compressor is excessive, （）.

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5 An increase in rotor clearances in a rotary pump will （）.

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