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【简答题】
动点相对于定参考系的运动,称为( )
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举一反三
【简答题】一结构如图(a)所示。圆轴AB的扭转刚度为GI p ，立杆CD和FG的抗拉刚度为EA，尺寸a及外力偶矩M e 均为已知，M e 作用在横梁上。圆轴与横梁牢固结合，垂直相交，立杆与横梁铰接，也垂直相交。横梁可视为刚体。求立杆的轴力及圆轴的扭矩。
【多选题】自备发电机组安装质量及功能检测时，检测内容及方法正确的是（）。
A.
自动启动并达到额定转速并发电的时间不应大于30s
B.
储油箱内的油量应能满足发电机运行3－8小时的用量
C.
手动方式启动时，发电机应60s内启动运转正常
D.
仪表、指示灯及开关按钮等应完好
【简答题】如何理解“春夏养阳,秋冬养阴”句的含义?
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
The woman is a close friend of the man.
B.
The woman has been working too hard.
C.
The woman is seeing a doctor.
D.
The woman is tired of her work.
【单选题】A binary tree of depth “d” is an almost complete binary tree if .
A.
(i) Each leaf in the tree is either at level “ d ” or at level “ d – 1 ”
B.
(ii) For any node “ n ” in the tree with a right descendent at level “ d ” all the left descendents of “ n ” that are leaves, are also at level “ d ”
C.
Both (i) & (ii)
D.
None of them
【单选题】Which of the following is NOT true?
A.
She tried to distance herself from Asian stereotype by degrading her own race and pretending she hated math.
B.
The more she rejected her Chinese identity, the more popular she became.
C.
She realized that no matter how much she pretended that she was the same as her American classmates, she wasn’t.
D.
White is the norm for people who have lived where she lived, but white is not the norm for her.
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