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【单选题】
受扭转变形的轴,各截面上的应力为()
A.
正应力
B.
剪应力
C.
扭应力
D.
A+C
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参考答案:
举一反三
【单选题】Mary often forgets ________ her English book.
A.
bring
B.
brought
C.
is bringing
D.
to bring
【单选题】Mary ______ down the, notes on the board into her book.
A.
copied
B.
wrote
C.
describe
【简答题】何谓心输出量?影响心输出量有哪些因素?
【单选题】TCP/IP参考模型中,路由选择功能由( )层完成。
A.
运输层
B.
网络接口层
C.
网际层
D.
应用层
【单选题】在TCP/IP参考模型中,路由选择功能实现在( )。
A.
接入层
B.
传输层
C.
互联层
D.
数据链路层
【单选题】施工项目经理部是( )的施工现场生产组织机构,工程项目验收竣工即自然解体。
A.
具有稳定
B.
具有弹性
C.
具有相对固定
D.
具有不变
【单选题】Mary is looking for the book she lost yesterday
A.
trying to find
B.
trying to read
C.
trying to buy
D.
trying to borrow
【单选题】- ________ book is this? -- It's Mary's.
A.
Whose
B.
Where
C.
How old
D.
How many
【单选题】— What's this in English? — It's _____ English book. _____ book is Mary's. [     ]
A.
a, The
B.
an, A
C.
an, The
【单选题】John is collaborating with Mary in writing a book.
A.
cooperating
B.
merging
C.
combining
D.
associating
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