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【单选题】
常用的随机抽样方法主要有简单随机抽样、分层随机抽样和()
A.
复杂随机抽样
B.
配额随机抽样
C.
任意随机抽样
D.
分群随机抽样
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【简答题】组A对某文件具有本地读取权限,组B对该文件有修改的权限,用户User同时属于A组和B组,那么User对该文件的权限是()。
【单选题】进口商按合同规定开出信用证,()
A.
应被视为已履行了支付贷款义务。
B.
尚须开证银行付款后才能被认为已履行付款义务。
C.
没有履行合同义务
D.
没有付款
【简答题】Which of the following statements is NOT true? A) World population is increasing at a rate of 150 per minute. B) Lower death rates also contribute to world population growth. C) The population of Colu...
【判断题】工件在机床上或在夹具中装夹时,用来确定加工表面相对于刀具切削位置的面叫定位基准。
A.
正确
B.
错误
【简答题】People are very interested in______in the virtual world, which make them feel as if in a real world, in spite of the tech glitches.
【判断题】德国宗教改革的导火线是教皇在德国境内兜售赎罪券
A.
正确
B.
错误
【判断题】隔离开关可以用来投切负荷电流和故障电流。
A.
正确
B.
错误
【多选题】Understatement is applied in ________.
A.
It is the rarest thing in the world to hear a rational discussion of vivisection.
B.
What he thought was, “I must have a Navy as good as Grandmamma’s.”
C.
When the Arabs, who had been used to living sparingly on a few dates, acquired the riches of the Eastern Roman Empire…
D.
When white men first effect contact with some unspoilt race of savages, they offer them all kinds of benefits, from the light of the Gospel to pumpkin pie.
【多选题】我国城市公园分为哪几类?
A.
综合公园
B.
社区公园
C.
专类公园
D.
带状公园
E.
街旁绿地
【单选题】组A对某文件具有本地读取权限,组B对该文件有修改的权限,用户server同时属于A组和B组。那么User同时属于A组和B组,那么User对该文件的权限是()
A.
修改
B.
拒绝,即无权限
C.
读取和修改
D.
读取
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