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【单选题】
下列有关防火阀的描述错误的是 。A.
防火阀按阀门关闭驱动方式可分为重力式防火阀、弹簧力驱动式防火阀、电磁式防火阀、电动机驱动式防火阀及气动驱动式防火阀五种
B.
重力式防火阀可分矩形和圆形两种
C.
矩形防火阀有单板式和多叶片式两种
D.
圆形防火阀有单板式和多叶片式两种
E.
基本构造由阀壳、阀板、转轴、托框、自锁机构、检查门片等组成
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举一反三
【单选题】集体主义是个人与集体辩证统一关系在道德上的反映。坚持集体主义 1需要关注个人利益 2不需要考虑个人利益 3不需要承认个人利益的合理性 4反对只顾自己、不顾他人的极端个人主义
A.
①④
B.
②③
C.
①③
D.
②④
【简答题】To make sure that we live now on 80% of our income and invest the other 20%, the author suggests applying to the bank for ______ .
【单选题】The author is now convinced that _____.
A.
It is natural for all people to think of the center of the world as being somewhere very familiar to them
B.
there can be only one center of the world and it is England people in other countries do not know thy here he was born in New
C.
there can be only one center of the world and it is the rock pinnacle in the Brazilian village but most Americans do not know this
D.
there are two centers of the world, one in the United States in the cultural sense, and the other in Brazil in the geographical sense
【单选题】1 2 .集体主义是个人与集体辩证统一关系在道德上的反映。坚持集体主义( )。 1需要关注个人利益 2不需要考虑个人利益 3不需要承认个人利益的合理性 4反对只顾自己,不顾他人的极端个人主义
A.
②④
B.
B②③
C.
③④
D.
①④
【单选题】To which of the following is the author likely to agree?
A.
A now boom, on the horizon．
B.
Tighten the belt, the single remedy．
C.
Caution all right, panic not．
D.
The more ventures, the more chances．
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