The working stroke is also called ( ) strok

I’d like to have a talk _____ your captain.

Remote control means that the system is being controlled by the operator whois situated ( ) from the system

We use ( ) for the main engin

Head tank should be used to remove ( ) from cooling water.

What does the picture show? It’s a(n) ___________.

Feed water heaters are necessary for ( ) to increase its efficiency

May I know your name, please?( )

At sea, we usually use( ) to provide hot water.

The working stroke is also called ( ) strok

Once a scavenging fire is detected, the engine ( )