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【单选题】
用氮气置换氢气管道和设备,氧含量小于()为置换合格.
A.
0.01
B.
0.02
C.
0.005
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举一反三
【单选题】Causes of market failure include
A.
externalities and market power.
B.
market power and incorrect forecasts of consumer demand.
C.
externalities and foreign competition.
D.
incorrect forecasts of consumer demand and foreign competition.
【单选题】Market failure is the inability of
A.
buyers to interact harmoniously with sellers in the market.
B.
a market to establish an equilibrium price.
C.
buyers to place a value on the good or service.
D.
some unregulated markets to allocate resources efficiently.
【单选题】现代商业银行是随着( )的产生而发展起来的。
A.
信用
B.
中央银行
C.
资本主义生产方式
D.
社会主义生产方式
【简答题】EDTA法测定饲料中钙含量时滴定终点的颜色为( ) 。
【单选题】When market failure happens, what is the general respond in the real world?
A.
The market will self-adjust back to the correct function.
B.
The government will react and deal with market failure.
C.
Individuals cannot make impact on the market failure.
D.
Society cannot make impact on the market failure.
【单选题】Causes of market failure include
A.
externalities and foreign competition.
B.
market power and incorrect forecasts of consumer demand.
C.
externalities and market power.
D.
incorrect forecasts of consumer demand and foreign competition.
【单选题】作图法解决部分互溶物系多级逆流萃取设计型问题时,确定如下各“点”,顺序正确的是()①整个设备的混合点M;②最终萃取相点E1;③最终萃余相点RN;④各级之间两相的差点D。
A.
M ® E1 ® R N ® D
B.
M ® R N ® D ® E1
C.
R N ® M ® E1 ® D
D.
R N ® E1 ® D ® M
【多选题】The performance of the market failure
A.
Market monopoly
B.
Information asymmetry
C.
Externality and public goods
D.
Economic fluctuation
【单选题】(单选)作图法解决部分互溶物系多级逆流萃取设计型问题时,确定如下各“点”,顺序正确的是()*①整个设备的混合点M;②最终萃取相点E1;③最终萃余相点RN;④各级之间两相的差点D。
A.
M ® E1 ® R N ® D ;
B.
M ® R N ® D ® E1 ;
C.
R N ® M ® E1 ® D ;
D.
R N ® E1 ® D ® M。
【单选题】(单选)设计部分互溶物系多级逆流萃取设备时,若选择采用较大的溶剂比,则达到分离要求所需理论级数()
A.
增多;
B.
减少;
C.
不变;
D.
无法确定。
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