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【判断题】
留置权人应当给债务人 2 个月以上履行债务的期间。A.
正确
B.
错误
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【简答题】图示为直齿圆锥齿轮和斜齿圆柱齿轮组成的二级传动。已知轮1为主动,转向如图所示。试求: (1) 确定斜齿轮3、4的螺旋线方向,并画在图上(要求中间轴上的轴向力较小); (2)画出齿轮2、3所受各分力的方向;
【简答题】图示为直齿圆锥齿轮和斜齿圆柱齿轮组成的二级传动。已知轮1为主动,转向如图所示。试求: (1)确定斜齿轮3、4的螺旋线方向,并画在图上(要求中间轴II-II上的轴向力较小); (2)画出齿轮2、3所受各分力的方向;
【简答题】已知二级平行轴斜齿轮传递运动和动力,主动轮1的转向和轮齿螺旋线方向如图所示。 斜齿轮3的螺旋线方向应为()旋(填左/右), 斜齿轮4的螺旋线方向应为()旋(填左/右),才能使中间轴II上齿轮2和3的轴向力方向相反。
【简答题】Peter is a student. He usually goes to school on a bus. This morning, He takes a taxi with his father because he may be late for school. His mother gives him a banana when they go out. On the way, he ...
【简答题】A.The reported hero turned out to be his father. B.He did not understand his father till too late. C.Such misfortune should have fallen on him. D.It reminded him of his miserable childhood, Passage Th...
【简答题】听短文，选择正确答案。短文读两遍。 1. Tom went to visit his uncle with _____. A. his mother B. his father C. his sister 2. They went there _____. A. by bike B. on foot C. by bus 3. His uncle's home is _____ their home...
【单选题】Which of the following statements is INCORRECT about the boy?
A.
He was chained by his father and stepmother as a punishment.
B.
He was chained with chains and padlocks.
C.
He was unable to unlock and save himself.
D.
He was chained to the kitchen table.
【单选题】It is a wise father that knows his own child, but today a man can boost his paternal(fatherly)wisdom — or at least confirm that hes the kids dad. All he needs to do is shell out $30 for paternity test...
A.
locate one"s birth place.
B.
promote genetic research.
C.
find out if one is the father of a child.
D.
help improve one"s intelligence.
【简答题】His fathe___________ and got him out of jail.
【简答题】Sara is in his father’s car .
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