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

The purpose of PSC is （）

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 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 （）.

下列有关港口国检查的提法中，（）正确。 ①PSC官员是经海事组织正式授权的执行港口国监督检查的官员； ②“检查”是PSC官员观察船舶的维护状况，产生概括性的认识并登轮检查船舶证书和文件； ③“明显理由”是船舶及其设备或其船员实质上不符合有关公约要求的证据； ④“详细检查”是当PSC官员发现有明显理由表明船舶条件、设备或船员实质上与证书不符后进行的全面检查。