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【判断题】
自动控制系统就是利用输出量与其期望值的偏差来对系统进行控制。A.
正确
B.
错误
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举一反三
【单选题】Which of the following statements is not true about the phoenix ?
A.
It exists only in legends and fairy tales.
B.
It reigns over the feathered world.
C.
It is usually an outstanding male.
D.
It has the feathers of the peacock and the legs of the crane.
【单选题】You’ll be easily to be by the company if you are expert at the computer and you can drive a car as well.
A.
taken to
B.
taken on
C.
taken out
D.
taken up
【单选题】相同的质量的NO 2 和N 2 O 4 ，下列说法正确的是：①分子的物质的量相同②原子的物质的量相同③原子的个数相同④电子数相同⑤质子数相同。（ ）
A.
①②③
B.
①②③⑤
C.
②③④⑤
D.
①④⑤
【单选题】Humor is usually the most important feature _____’s stories.
A.
Henry James
B.
Mark Twain
C.
Stephen Crane
D.
William Dean Howells
【简答题】The crane is usually mounted on a pedestal(底座) to offer adequate visibility(能见度,可见性,视野) to the operator.
【单选题】Humor is usually the most important feature in _____’s stories.
A.
Henry James
B.
Stephen Crane
C.
Mark Twain
D.
William Dean Howells
【简答题】旅游文化的种类其中结合实例说明哪些属于精神文化
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