The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）

Each cylinder in a two stroke cycle engine experiences combustion（）.

In ship construction，keel scantlings should be the greatest（）.

If a gasoline engine turns over freely but will not start，the cause is generally（）.

Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.

The portable radio apparatus means（）.

Permission is kindly requested（）the ballast water.

The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.

As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.

Limit switches are used on which davits?（）