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【单选题】
传质过程受液膜控制的逆流吸收塔中,若入塔混合气流量有所增加,则气相总传质单元高度:
A.
增大;
B.
减小;
C.
基本不变;
D.
不确定。
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举一反三
【单选题】Discontinuities that are readily detectable by acoustic emission testing are ( )
A.
leaks.
B.
plastic deformation.
C.
growing cracks.
D.
all of above.
【单选题】Which particles are emitted during thermionic emission?
A.
atoms
B.
electrons
C.
neutrons
D.
protons
【单选题】计算9.9×37的简便方法是(  )
A.
9×0.9×37
B.
(10-0.1)×37
C.
(10-1)×37
D.
4.9×5×37
【单选题】______ are emission-free at the exhaust.
A.
Gasoline car
B.
Diesel car
C.
Hybrid car
D.
Compressed air cars
【单选题】1#楼梯一层到二层踏步数为( )。
A.
20
B.
22
C.
26
D.
28
【单选题】烟煤的挥发份含量在( )之间。
A.
6.5%~37%
B.
10%~37%
C.
10%~45%
D.
37%~45%
【单选题】python自带的一个实现MD5算法的工具包是
A.
RSA
B.
hashlib
C.
PyCrypto
D.
cryptography
【简答题】1, 2, 10, 37, ( )。
【单选题】烟煤的挥发份在()之间
A.
6.5%~37%
B.
10%~37%
C.
10%~45%
D.
37%~45%
【简答题】(Reduce pollution and zero emission / Reduce pollution and decrease emission) are two important thoughts in the concept of green chemistry.