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【简答题】
下图所示为一反应器温度控制系统示意图。 A 、 B 两种物料进入反应器进行反应,通过改变进入夹套的冷却水流量来控制反应器内的温度不变。试画出该温度控制系统的方块图,并指出该系统中的被控对象、被控变量、操纵变量及可能影响被控变量的干扰是什么?简述整个控制系统是如何起作用的?
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举一反三
【单选题】You should go to the grand opening ceremony, ____________ ?
A.
aren't you
B.
shouldn't you
C.
wouldn't you
D.
don't you
【单选题】My father didn't fly to London for the opening ceremony, because his doctor suggested that he ______ there.
A.
not to go
B.
hadn't gone
C.
not go
D.
wouldn't go
【单选题】主要由单核巨噬细胞产生的细胞因子是( )
A.
IL-1
B.
IL-2
C.
IL-4
D.
IFN-γ
E.
TNF
【单选题】---- I haven’t got the ticket for the opening ceremony of the 2010 Shanghai World Expo. ---- Don’t worry. It’ll be broadcast_______ on April 30. Don’t miss it.
A.
lively
B.
alive
C.
live
D.
living
【单选题】Don't keep the door ____! [     ]
A.
close
B.
open
C.
opening
【单选题】主要由单核巨噬细胞产生的细胞因子是
A.
IL-1
B.
IL-2
C.
IL-4
D.
IL-12
【单选题】I don't mind _____ the door. [     ]
A.
you open
B.
your open
C.
your opening
D.
yours opening
【单选题】―We didn’t see Robert at the opening ceremony yesterday. ―No, he _______ it.
A.
mustn’t have attended
B.
needn’t have attended
C.
needn’t attend
D.
didn’t need to attend
【单选题】主要由单核巨噬细胞产生的细胞因子是
A.
IL-1
B.
IL-2
C.
IL-4
D.
IL-5
E.
IL-10
【单选题】实施逻辑乘运算1010∧1001后的结果是
A.
1000.0
B.
1.0
C.
1001.0
D.
1011.0
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