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搜题
【单选题】
齿轮在使用的过程中经常出现齿根断裂,以下可能导致轮齿断裂的原因A.
可能齿轮模数太小，轮齿太细
B.
可能过载了
C.
可能工作中有冲击，可能材料选择不合适
D.
以上都有可能
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皮皮学刷刷变学霸
举一反三
【单选题】Tom the party as no one saw him there yesterday evening.
A.
can ’ t attend
B.
mustn ’ t attend
C.
won ’ t have attended
D.
couldn ’ t have attended
【多选题】Which of the following statements correctly capture why an application that uses a Handler, might send Messages to the Handler, rather than post Runnables to it, or vice versa?
A.
Messages are used when the Handler implements the Message response.
B.
Runnables are used when the Sender implements the action to be taken.
C.
Messages can take parameters. Runnables can't.
D.
Runnables are less efficient than messages.
【简答题】什么是超高增加系数?
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