题目内容

承载能力极限状态和正常使用极限状态，都应采用荷载设计值进行计算，因为这样偏安全。

A. 对
B. 错

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The International SafetyNet Service is able to address the call to __________

A. all vessels
B. selected groups of ships
C. a particular ship
D. a,b,c are all

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The COSPAS-SARSAT system can provide distress alerts to the appropriate rescue authorities

A. at sea
B. on land
C. in the air
D. Throughout the world

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Every ship, while at sea, shall maintain a continuous watch onif the ship is fitted with an MF radio installation.

A. 2182KHz
B. 156.8MHz
C. 2187.5KHz
D. 2182.7KHz

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Why do some stations keep silence?

A. Because they are not engaged in the distress traffic
B. They will affect the transmission of that distress traffic
C. The powers of these stations are very weak
D. They are not in charge of search and rescue

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承载能力极限状态和正常使用极限状态，都应采用荷载设计值进行计算，因为这样偏安全。

A. 对 B. 错

The International SafetyNet Service is able to address the call to __________

The COSPAS-SARSAT system can provide distress alerts to the appropriate rescue authorities

Every ship, while at sea, shall maintain a continuous watch onif the ship is fitted with an MF radio installation.

Why do some stations keep silence?

A. 对
B. 错