輪機英語船舶動力裝置單項選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 Before replacing a piston you should check the rings to see that all clearances and gaps are （） the permissible tolerances.

點擊查看答案

2 The scavenging box is built of a number of sections provided with vertical flanges enabling them （） together to form two blocks.

點擊查看答案

3 The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.

點擊查看答案

4 The viscosity regulator controls the （） of the fuel oil in order to provide the oil at the correct viscosity for combustion.

點擊查看答案

5 The abbreviation BDC means （）.

點擊查看答案