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【单选题】
安全防范系统一般由哪三部分组成（）。A.
出入口管制系统、可视对讲系统、电视监视系统
B.
防盗报警系统、可视对讲系统、电子巡更系统
C.
防盗报警系统、停车场管理系统、电视监视系统
D.
防盗报警系统、出入口管制系统、电视监视系统
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】发生重度颠簸，乘务员的处置程序错误的一项是
A.
马上返回座位做好，系好安全带
B.
立即广播，让旅客坐好
C.
洗手间按的旅客也需要另外提醒
D.
洗手间的旅客不得返回座位
【单选题】How many grams of gold are there in 2.65 moles of Au?
A.
5.22 ×10 2 g
B.
5.22 ×10 3 g
C.
5.22 ×10 4 g
D.
5.22 ×10 5 g
【简答题】The acting direction of static pressure is always in the direction of the acting suce
【简答题】The definition about static pressure is
【单选题】The static pressure and density of the airstream behind the expansion wave are ________.
A.
increased
B.
decreased
【单选题】The static pressure and density of the airstream behind the shock wave are greatly ________.
A.
increased
B.
decreased
【单选题】Oil pressure in the lubrication system is _____ the static sea water head to ensure that sea water _____ the stem-tube.
A.
lower than / can lubricate
B.
lower than / can cool
C.
higher than / can enter
D.
higher than / cannot enter
【单选题】How many senators do they need to vote guilty in order to remove a President from office?
A.
One third
B.
Two thirds
C.
A half
D.
Three quarters
【简答题】How many grams of porridge does he use each morning?
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