what is IMO ？what is ISO 9000？what is ISM ？what is SMS system ？
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为了对抗衰退，美联储可以________。
A. 通过购买有价证券来降低联邦基金率
B. 通过卖出有价证券来降低联邦基金率
C. 通过购买有价证券来提高联邦基金率
D. 通过卖出有价证券来提高联邦基金率
E. 降低利息收入的收入税率
After the SSP being checked by a duly authorized officials of a port State, whom should be
A. Port State
B. Flag state
C. The CSO
D. The Administration
Which of the following factors tends to increase scale formation on the saltwater side of
A. Baffle plates that have been bent during prior removal
B. Leaks m the cooler tube nest
C. Operating the engine while maintaining a high sea water outlet temperature
D. A punctured sea water strainer supplying cooling water to the heat exchanger
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