A. they care about the possible reaction to their work.
B. public response is one of the primary concerns,
C. they are keenly aware of public interest in their work.
D. they are indifferent toward response to their work.
第7题
液压传动系易实现无级调速,液压传动装置调速范围可以很容易达到()。
A.1~100
B.100~2000
C.2000~10000
D.10000~20000
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