皮皮学，免费搜题
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【单选题】
稳压管的稳压是利用PN结的( )来实现的。A.
单向导电特性
B.
正向导通特性
C.
反向击穿特性
D.
反向截止特性
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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【简答题】给粉机的作用是()。
【简答题】给粉机的作用是什么？叶轮式给粉机有何特点？
【简答题】给粉机的作用及结构是怎样的？
【简答题】S1:Swing out No.1 lifeboat and report.S2:No.1 lifeboat swung out.Q:What has been done?A. Entering the lifeboat. B. Swing out the lifeboat. C. Lowering the lifeboat. D. Letting go the lifeboat.
【单选题】Frapping lines are fitted to lifeboat davits to（）.
A.
secure the lifeboat in the davits when in the stowed position
B.
bring the lifeboat close along the rali in the embarkation position
C.
give the occupants a safety line when the boat is being lowered from the embarkation level
D.
reduce the swinging of the lifeboat at the embarkation level
【简答题】给粉机的作用是根据锅炉负荷需要的（），把煤粉仓中的煤粉均匀的送入一次风管中。
【单选题】Lifeboat hatchets should be（）.
A.
kept in a locker
B.
secured at each end of the boat with a lanyard
C.
kept next to the boat coxswain
D.
kept in the emergency locker on the ship and brought to the lifeboat when needed
【简答题】给粉机的作用是将（）按照锅炉负荷的需要均匀地送至（），送入炉膛。
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