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【单选题】
A process of comparing the actual performance of a machine with the intended performance, and the adjusting the machine to reduce and eventually eliminate the difference between the actual and intended performance is called .A.
open loop control
B.
feedback
C.
combining control
D.
integral process
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【单选题】---Your new blouse looks very beautiful. Is it _____silk? ---Yes. It’s _______ Hangzhou.
A.
made of, made in
B.
made from, made into
C.
made in, made in
D.
made for, made by
【单选题】The blouse is made ______ silk, so it is very comfortable ______. [ ]
A.
of, to wear
B.
from, to put on
C.
of, to dress
D.
with, to look
【简答题】某天早晨的气温是2°C,中午上升了13°C,到了半夜又下降了8°C,半夜的气温____°C。
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