The air reservoirs must have （） fitted

1、Fuel oil tanks must be fitted with （）

Fuel oil tanks must be fitted with （） that can be closed rapidly and remotely in the event of an emergency such as a fire.Astop valvesBnon-return valvesCquick closing valvesDrelief valve

2、All bilge suctions must be fitted with

All bilge suctions must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor plate level for easy access.AstrangersBrelief valvesCemergency valvesDstrainer

3、On what do you depend having the air c

On what do you depend having the air cooler of main engine chemically washed?（）Aincreased air pressure differenced before and aft air coolerBr...

4、Vessels transiting the canal must have

Vessels transiting the canal must have their accommodation ladders and cargo booms（）.AremovedBrigged inCreadjustedDtested

5、He must have heard of the bad news,__

He must have heard of the bad news,______________can be perceived in his expression.AasBwhatCwhileDthat

6、Most air conditioning units have （） fo

Most air conditioning units have （） for adjusting the ratio of recirculated fresh airCare must be taken not to reduce the fresh air so that stuffiness or smells arise.Acatch platesBdampersCregulating valvesDfa