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【多选题】
通常把应力分解成垂直于截面和切于截面的两个分量, 其中垂直于截面的分量称为(),用符号 ()表示,相切于截面的分量称为() ,用符号()表示。
A.
正应变、σ、切应力、γ
B.
正应力、σ、切应力、τ
C.
正应变、ε、切应变、γ
D.
正应力、σ、剪应力、τ
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参考答案:
举一反三
【简答题】n. the power of knowing sth. without reasoning
【简答题】power / ˈ paʊə(r)/ n.
【简答题】i n. power of the mind to imagine
【单选题】工业生产中黄铜的含锌量不超过47%。含锌量小于________时,锌全部溶于铜中,形成α固溶体,称为单相黄铜。
A.
30%
B.
35%
C.
40%
D.
45%
【单选题】工业生产中黄铜的含锌量不超过47%。含锌量小于()时,锌全部溶于铜中,形成α固溶体,称为单相黄铜。
A.
30%
B.
35%
C.
39%
D.
39%~45%
【单选题】表达型客户的特点有:
A.
充满激情
B.
吹毛求疵
C.
冷静
D.
沉默寡言
【简答题】n. position of the highest power, authority or status
【单选题】There comes a young woman with good __________.
A.
looks
B.
look
C.
appears
D.
face
【简答题】阅读理解。 It is August. It is very hot. A young man comes to a forest (森林). He's walking near the forest. On the left there is a river and on his right there is a forest. He comes up to the river and want...
【简答题】阅读理解。 It is in autumn. A young man comes to a forest. He is walking beside the forest. On his right is a river. On his left is the forest. Suddenly he found two green eyes looking at him from the fore...
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