题目内容

结构设计的目的不仅要保证结构的可靠性，也要保证结构的经济性。

A. 对
B. 错

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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 __________

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

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

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