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【多选题】
对于人工黑体模型的辐射特性,下列说法正确的是()。A.
就辐射特性而言，小孔模型具有黑体表面一样的性质
B.
制造空腔材料本身发射率的大小原则上不影响黑体模型的辐射特性
C.
改变制造空腔材料本身的发射率不影响小孔辐射
D.
改变制造空腔材料本身发射率会影响小孔辐射
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举一反三
【单选题】— ____? — No, thanks. I’m just looking around. I’ll let you know if I want anything.
A.
Have you made up your mind what you want
B.
What do you want
C.
Can I help you
D.
Do you like it
【单选题】关于数制,下列哪个说法不正确?
A.
二进制有两个数码“0”和“1”
B.
二进制有两个数码“1”和“2”
C.
二进制基数为2，逢二进一
D.
八进制基数为8，逢八进一
【单选题】产科意外容易诱发DIC, 其主要原因是( )
A.
血液处于高凝状态
B.
单核吞噬细胞系统功能低下
C.
微循环血流淤滞
D.
纤溶系统活性增高
E.
血中促凝物质含量增多
【单选题】Have you made up your mind ________ abroad? I advise you to consider it carefully.
A.
study
B.
to study
C.
studying
D.
studied
【单选题】听力原文：Have you made a reservation, or should I call the hotel? (A) Yes, you'll have a conference call soon. (B) It's already been taken care of. (C) Yes, enjoy your stay. (32)
A.
B.
C.
【单选题】Nowhere else your fortune except where the economy is booming．
A.
you can make
B.
have you made
C.
you will make
D.
can you make
【单选题】Have you made your for a passport? . [ ]
A.
appointment
B.
application
C.
apposition
D.
appreciation
【单选题】产科意外容易诱发 DIC ,其主要原因是
A.
单核吞噬细胞系统功能低下
B.
血液处于高凝状态
C.
微循环血流淤滞
D.
纤溶系统活性增高
E.
血中促凝物质含量增多
【单选题】听力原文：M：Have you made up your mind to become a policewoman after graduation? Aren't you afraid something could happen to you? W：Relax．I just want to work in Crime Scene Investigation Department．I'll on...
A.
The department the woman will work for is not very good.
B.
The woman will have to patrol on the streets over a year.
C.
Something bad happen to the woman.
D.
The woman will have to fight against the criminals.
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