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【单选题】
硫酸阿托品需要检查的特殊杂质是：A.
麻黄碱
B.
罂粟碱
C.
莨菪碱
D.
阿扑吗啡
E.
其他碱
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举一反三
【单选题】Why are old ships liabilities to ship-owners in the United States?
A.
The ship-owners have to pay taxes for dissecting their ships.
B.
They must clean of the ships' toxic materials before sending them to dry docks.
C.
Shipyards pay very little for the old ships.
D.
They must pay to have their ships dismantled.
【简答题】Why does a ship need maintenance?
【简答题】钳形电流表是一种用于测量 交流电流大小的仪表。
【单选题】Why a gearbox is needed in a ship driven by a medium-speed diesel engine? .
A.
To reduce the main engine speed
B.
To increase the main engine speed
C.
To govern the main engine speed
D.
To fix the propeller shaft
【单选题】Why was Key on board a British ship?
A.
Because he was held after a negotiation with the British.
B.
Because he was arrested during the battle.
C.
Because he could not persuaded the British to set the doctor free.
D.
Because the British began their attack on Baltimore.
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