影响塑性铰转动能力的因素有那些

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问题:

影响塑性铰转动能力的因素有那些

考点:二级注册结构工程师二级注册结构工程师
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试述端粒假说。

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已知圆锥的底面半径为4cm,高为3cm,则这个圆锥的侧面积为(    )cm2

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Mary’s plan for next week
Monday
7:30 go to the cinema with Alice
Tuesday
11:00 doctor
Wednesday
9:00 table tennis game   evening-study for exam
Thursday
8:30 concert
Friday
Afternoon—help Uncle Sam in his restaurant
Saturday
9:00—10:30 art class    14:00 visit grandmother
Sunday
8:00 supper with Betty and Ann
Peter’s plan for next week
Monday
study group meeting 3:00 p.m.
Tuesday
basketball match 4:30 p.m.
Wednesday
go to see some friends 2:00 p.m.
Thursday
noon, lunch with Larry
Friday
2:00—4:00 p.m. volunteer(志愿者) work @ Student Centre
Saturday
Shopping 10:00 a.m.
Sunday
Basketball team party 9:00 p.m.
小题1:Peter’s study group meeting will be on ______.
A.Saturday morningB.Monday afternoon
C.Saturday eveningD.Friday afternoon
小题2:From Peter’s plan we learn that Peter likes ______.
A.table tennisB.musicC.artD.basketball
小题3:On Sunday morning Mary will ______.
A.be freeB.be busyC.see the doctorD.go shopping
小题4:What will Mary do on Wednesday evening?
A.See her friendsB.Play basketball
C.Go to her art classD.Prepare for an exam
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普通圆柱蜗杆传动的精度等级有12个。

题型:问答题

企业经营安全程度的判别指标一般是()。

A.保本量

B.保本额

C.安全边际

D.安全边际率

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