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【单选题】
等速运动规律的凸轮机构,从动件在运动开始和终止时,加速度值为 。A.
0
B.
无穷大
C.
常量
D.
任意值
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反馈参考答案：
举一反三
【单选题】Named after a river that passes through the Congo, the Ebola virus originally _____ itself in the interior of Africa in 1976.
A.
spread
B.
absorbed
C.
manifested
D.
poisoned
【简答题】列举:旅游活动的六大要素和拓展要素
【简答题】In the 1970s, the weekly minimum wage for actors was about ______.
【单选题】Named after a river that passes through the Congo, the Ebola virus originally (manifested) itself in the interior of Africa in 1976.
A.
操作；操纵
B.
显现；表明
C.
页边空白；边缘
【单选题】The author tends to think that the weekly maid service of the UCLA is meant to be ______.
A.
beneficial
B.
innovative
C.
appealing
D.
indulgent
【简答题】A．annually B．monthly C．quarterly D．weekly
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