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【简答题】
用一片74LS157实现下列4个逻辑函数: F 1 =AB  F 2 =A+B  F 3 =A B  F 4 =A B
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举一反三
【单选题】The problem you paid attention to _________________ now, for the attention you paid to _________ was useful.
A.
being solved;solving
B.
solving;solve
C.
is solved; solve
D.
has been solved; solving
【单选题】听力原文:W: The problem is that I don't get paid until tomorrow, but I must register for Dr. Johnson's class. Could you hold a place for me until tomorrow? M: I'm sure you know that we are not permitted t...
A.
Dr. Johnson's class is already full.
B.
The reserved spaces are for faculty only.
C.
He will give the student a chance after she waits for a while.
D.
No exceptions can be made with regard to registration policy.
【判断题】轮胎是汽车上唯一接触路面的零件。( )
A.
正确
B.
错误
【多选题】下列关于计税基础的说法,正确的有( )。
A.
资产的计税基础是指企业收回资产账面价值过程中,计算应纳税所得额时按照税法规定可以自应税经济利益中抵扣的金额
B.
负债的计税基础是指负债的账面价值减去未来期间计算应纳税所得额时按照税法规定可予抵扣的金额
C.
负债的计税基础,是偿还负债的未来期间计算应纳税所得额时按照税法规定可予抵扣的金额
D.
资产的计税基础是指企业收回资产账面价值过程中,计算应纳税所得额时按照税法规定不能自应税经济利益中抵扣的金额
【单选题】橙汁瓜条的烹调方法为。
A.
B.
C.
D.
【单选题】听力原文:W: The problem is that I don’t get paid until tomorrow, but I must register for Dr. Smith’s class. Could you hold a place for me until tomorrow? M: I’m sure you know that we are not permitted to ...
A.
Dr. Smith's class is already full.
B.
The reserved spaces are for faculty only.
C.
He will give the student a chance after she waits a while.
D.
No exceptions can be made with regard to registration policy.
【判断题】轮胎是汽车上唯一接触路面的零件。
A.
正确
B.
错误
【单选题】有正态总体N (μ,s2),其中方差未知,对该总体均数进行区间估计时应采用的抽样分布是
A.
t 分布
B.
正态分布
C.
F 分布
D.
卡方分布
【简答题】函数用于将数据从逻辑层异步发送到视图层。
【多选题】下面关于图层的描述哪些描述是正确的?( )
A.
图层可以用文件夹进行管理
B.
图层透明的部分是有像素的
C.
图层透明的部分是没有像素的
D.
背景层可以转化为普通的图像图层
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