The hoist line primarily used for lifting personnel on ship cranes is called the（）.

It is dangerous for vessels without the operational radar（）the estuary.

The load on the crosshead pin is always （）, so it is the （）half of the bearing which is subject to wear.

The goal, which they are unlikely to live to see , is tocure, prevent or manage all diseasesin the next 80or so years.

What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.

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（）.

The （） is used for hauling in or letting out the wires or ropes.

The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.

Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.

A radar display in which North is always at the top of the screen is a(n)（）.

What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.

Any alteration of course and／or speed to avoid collision shall，if the circumstances of the case admit，（）to another vessel observing visually or by radar.