輪機(jī)英語船舶輔助機(jī)械單項(xiàng)選擇題每日一練(2019.01.14)

來源：考試資料網(wǎng)

1 A gear pump belongs to （） according to its working principle.

2 Which of the following pumps belongs to centrifugal pump?（）

3 What color is used to indicate the last shot of anchor chain?（）

4 （） will be used to blow away the combustion products from the tube surfaces.

5 In motor ship, （） is often used to recover some of the heat carried in the exhaust gases from the main engine.