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【多选题】
液压传动的优点有哪些？A.
传动装置体积小、重量轻、惯性小、响应速度快，易实现快速启动.频繁换向；
B.
运动平稳、冲击小；
C.
易实现无级调速，调速范围大
D.
易实现过载保护
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举一反三
【单选题】'…others who put on programs'means that______．
A.
people get on their clothes with programs printed Oil
B.
people prepare and present the programs on TV
C.
people like the programs
D.
people acted in the TV programs
【单选题】A UN official said that aid programs would be ______ until there was adequate protection for relief convoy.
A.
depended
B.
suspended
C.
postponed
D.
expended
【单选题】Which of the following programs does NOT belong to public television programs?
A.
A program teaching DIYs.
B.
A documentary.
C.
A film on social events.
D.
A popular comedy.
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