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【单选题】
四杆长度不等的双曲柄机构,若主动曲柄作连续匀速转动,则从动曲柄将作A.
周期变速转动
B.
间歇转动
C.
匀速转动
D.
往复摆动
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知识点：
皮皮学刷刷变学霸
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【多选题】关于环刀法测定压实度，下列说法正确的是( )。
A.
环刀法可用于测定水泥稳定砂砾基层的压实度
B.
环刀法适用于细粒土
C.
环刀法检测比较方便
D.
环刀法检测结果比灌砂法的精确
【简答题】Sam: Hey, Maria and John. This Thursday is Bill’s birthday. Let’s think about the presents. Maria: Sure, Sam. I want to give him a computer . Sam: No, Bill never plays computer s. John: I want...
【单选题】The first one I ever got was a birthday cake snow globe on my birthday. In fact, I think it's probably my _______ favorite. [ ]
A.
nine
B.
nineth
C.
ninth
【简答题】阅读理解。 A child's birthday party should be one of the most fun s of the year, for the birthday child, the guests and even for the hosts. The three keys to a successful child's birthday party is pla...
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