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【单选题】
对于开式齿轮传动和承载能力计算，目前采取的方法是________。A.
按每小时齿面磨损量计算齿厚
B.
按轮齿弯曲疲劳强度计算，将所得模数加大10%～20%
C.
按齿轮传动设计
D.
按接触疲劳强度计算，然后将计算结果增加3%～8%
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【单选题】He didn’t come to school yesterday _______ that he was ill.
A.
because
B.
for
C.
in
D.
if
【单选题】—Mrs.Smith didn't come to the meeting, _____ ? —No, _____.She was ill. [ ]
A.
did he; he didn't
B.
did he; he did
C.
didn't she; she didn't
D.
did she; she didn't
【单选题】He ______ to work yesterday because he was ill.
A.
didn't come
B.
haven't come
C.
hadn't come
【单选题】— Thomas didn't come to school for the meeting, did he? — No. He ____. The meeting had been cancelled. [ ]
A.
shouldn't have come
B.
should not come
C.
didn't need to come
D.
wouldn't have come
【单选题】--- He didn’t come to school yesterday, didn’t he ? --- _________.He was ill in bed.
A.
Yes, he did
B.
No, he didn’t
C.
Yes, what a pity
D.
No, I think
【单选题】下列哪项不是以“企业价值最大化”作为企业财务管理目标的优点( )
A.
考虑了资金的时间价值
B.
考虑了风险与报酬的关系
C.
将企业可持续发展放在首位
D.
有利于精确估算非上市公司价值
【单选题】The reason why he didn’t come to school was _________ he was ill.
A.
because
B.
why
C.
that
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