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【判断题】
当婴幼儿缺乏维生素D时易引起佝偻病。()
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】设全集U={1,2,3,4,5},集合M={1, 3,5},N={3,4,5},则集合(? U M)∩N=
A.
{4}
B.
{2,3,4,5}
C.
{1, 3,4,5}
D.
Φ
【简答题】设全集U={1,2,3,4,5,6,7,8),集合M={3,4,5),集.合N={1,3,6),则集合P={2,7,8)可表示成 ( ) A.M∪N D.M∩N
【单选题】设集合U={1,2,3,4,5},集合M={3,5},N={1,4,5},则M∩ ='  ' (  )
A.
{5}
B.
{3}
C.
{2,3,5}
D.
{1,3,4,5}
【多选题】19-65.网络操作系统是指运行在服务器上,提供网络资源共享功能并负责管理整个网络的操作系统,下列可用作网络操作系统的有
A.
Windows10
B.
UNIX
C.
Linux
D.
Windows server 2012
【单选题】根据材料请回答 51~65 We know the kiss as a form. of expressing affection.But long before it became 51 ,it was the custom in many parts of the world to use the kiss as a(n) 52 of respect. In many African trib...
A.
it
B.
one
C.
this
D.
itself
【简答题】Once, long ago, there was a man who traveled from Persia to India on foot. He had been to India before. When he arrived at a village, he happened upon a fruit stand. In that village, fruit was quite b...
【单选题】—How long do you think it will be _______ we get the loan?—Perhaps two or three months.
A.
until
B.
before
C.
when
D.
that
【单选题】压力容器的制造方法多样,不同制造方式所成的容器有各自的特点,对于承压不高的中小型容器,可以采用技术较为成熟的( )方式制造:
A.
铸造
B.
锻造
C.
单层卷焊
D.
多层包扎
【单选题】He said he had been to Hong Kong ____ and he would go there _____ once again. [      ]
A.
long before, before long
B.
before long, long before
C.
long ago, before long
D.
long before, long before
【判断题】磁盘的磁道和光盘的光道都是由外向内的同心圆。
A.
正确
B.
错误
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