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【简答题】
用进位输出C预置法是把进位输出C后接至计数器的______，然后根据设计需要，把计数器的预置数据输入端接好预置数据。
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皮皮学刷刷变学霸
举一反三
【单选题】If the man crouches , he will find the earring he is looking for.
A.
stands on tiptoe
B.
bends his head
C.
looks down
D.
stoops low
【单选题】I know you are very busy at the beginning of the term. I really appreciate your help,and want to tell you that your help has encouraged me to work hard. What may these sentences be excerpted from?
A.
A letter of recommendation
B.
A letter of thanks.
C.
A letter of invitation
D.
A letter of asking for help.
【单选题】I know you are very busy at the beginning of the term. I really appreciate your help. Your invaluable advice and patient reply help me successfully accomplished my research. This excerpt is a(n) _____...
A.
complaint letter
B.
introduction letter
C.
thanks letter
D.
notice
【简答题】一年以内的生产能力计划称为中短期计划,它的最大特点是当年的可动用固定资产数量是 的。
【简答题】加密和解密属于OSI参考模型中(__)层的功能;实现数据交换的功能是(__)层。
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