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【简答题】
一带电粒子在磁场中做半径为R的圆周运动,已知磁场的磁感应强度为B,粒子的质量为m,速率为v,则该粒子所带电量为 。
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【单选题】–Have you got ready for your studying plan? --Yes! I have made it ______. Please give me some suggestions and then I will make some changes.
A.
cautiously
B.
privately
C.
roughly
D.
deadly
【单选题】Have you got the message I left with your father yesterday_______ you’ll have an important meeting tomorrow afternoon.
A.
in which
B.
with whom
C.
that
D.
which
【单选题】— Have you got your result of the final? — Not yet. I was told that the papers ______. [ ]
A.
were not grading
B.
have already been graded
C.
were still being graded
D.
have not grading
【单选题】关于域的功能级别,以下说法哪个不正确?
A.
Windows server 2012域的功能级别可以为Windows server 2008
B.
Windows server 2012域的功能级别只能为Windows server 2012
C.
Windows server 2012域的功能级别 可以高于林的功能级别
D.
Windows server 2012域的功能级别可以不同于林的功能级别
【单选题】下列有关改良牛鲍氏计数板计数红细胞的叙述,错误的是()
A.
不宜用过亮光线
B.
在低倍镜下计数
C.
计数中央大方格内四角及中央五个中方格内红细胞总数
D.
对于压线的细胞采取数上不数下、数左不数右的原则
【单选题】—Have you received your new shoes? —Yes. And at the same time I got the jacket I _____.
A.
had ordered
B.
ordered
C.
have ordered
D.
order
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