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【单选题】
( )不是机床夹具的基本要求
A.
保证工件加工的各项技术要求
B.
提高生产率和降低生产成本
C.
便于制作,操作简便
D.
夹具重心应尽量高
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【简答题】420÷3=420×3.______.(判断对错)
【简答题】When you are ill, you will see a doctor. The doctor will write a note to take to the chemist for some medicine. Chemists are usually good at reading doctor’s notes. But sometimes doctors write too bad...
【多选题】互联网电子商务系统必须具有十分可靠的安全保密技术,也就是说,必须保证网络安全的三大要素:
A.
信息传输的保密性交易者身份的确定性
B.
发送信息的不可否认性
C.
数据交换的完整性
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【单选题】审计人员获取的下列证据中,证明力最弱的是( )。
A.
应收账款函证回函
B.
产品出库单
C.
银行对账单
D.
销货发票
【单选题】When joining the Fund, ______.
A.
each member is required to deposit money to the Fund.
B.
some members are required to deposit money to the Fund.
C.
all the members are required to deposit the same amount of money to the Fund.
D.
only a few large countries are required to deposit money to the Fund.
【单选题】审计人员获取的下列审计证据中,证明力最弱的是( )。
A.
购货发票
B.
支票存根
C.
领料单
D.
律师声明书
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【单选题】420÷35的简便算法是 [     ]
A.
420÷5×7
B.
420÷5÷7
C.
420÷7×5
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