● The personal computer or (72) is the smallest general-purpose computer.

In a general cargo crane, （） is fitted to raise or lower the jib.

The main bearing shells often have a thin （） of lead or indium to provide a layer giving protection against corrosion.

The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）

Generally speaking，with（）the weather becomes cloudy or overcast with strong winds.

Generally speaking，with（）the weather becomes cloudy or overcast with strong winds.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of（）.

Excessive clearances in the main or crank-pin bearings will sometimes be indicated by （） before any bearing knock is heard.

The bearing shell generally has （） for location and oil grooves round the center of its axial length.

（）refers to a word or expression that is prohibited by the “polite” society from general use.