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【单选题】
熔焊时,由焊接能源输入给单位长度焊缝上的热能称为 。A.
焊接热输入
B.
焊接热循环
C.
焊接温度场
D.
焊接热影响区
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皮皮学刷刷变学霸
举一反三
【简答题】一般的,考虑水平附加正应力以及剪应力扩散范围则小得多,基本在()倍基础宽度的范围内。
【简答题】客观性取样 :
【单选题】One of the good things for men in women's liberation is that men no longer have to pay women the old-fashioned courtesies. In an article on the new manners, Ms. Holmes says that a perfectly able woman...
A.
men should walk on the inside of a sidewalk
B.
women are becoming more capable than before
C.
in women's liberation men are also liberated
D.
it's safe to break rules of social behaviour
【单选题】已知 i 1 = 10sin(314 t + 90 o )A , i 2 = 10sin(628 t + 30 o )A ,则( )
A.
i 1 超前 i 2 60°
B.
i 1 滞后 i 2 60°
C.
i 1 与 i 1 同相
D.
相位差无法判断
【单选题】The basics of business writing are_ ________.
A.
colourful, purposeful, economical
B.
purposeful, careful , reader oriented
C.
purposeful, economical, reader oriented
D.
purposeful, economical, writer oriented
【单选题】1 One of the good things for men in women's liberation is that men no longer have to pay women the old-fashioned courtesies. 2 In an article on the new manners, Ms. Holmes says that a perfectly able w...
A.
men should walk on the inside of a sidewalk.
B.
women are becoming more capable than before.
C.
in women's liberation men are also liberated.
D.
it's safe to break rules of social behaviour.
【单选题】The word 'strength' underlined in Paragraph 3 is closest in meaning to______.
A.
basis
B.
purpose
C.
discovery
D.
endurance
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