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【单选题】
下列有关流感病毒的描述,正确的是
A.
流感病毒为DNA病毒
B.
根据流感病毒核蛋白的特异型,分为甲、乙、丙三型
C.
甲型流感病毒极少发生变异
D.
流感病毒为普通感冒的最常见病原体
E.
流感病毒耐热,对干燥、紫外线不敏感
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举一反三
【单选题】Tom is clever at numbers and I think he will ________ an excellent accountant.
A.
make
B.
turn
C.
appear
D.
grow
【单选题】- What is your job? - I'm ____________ accountant.
A.
an
B.
a
C.
/
【单选题】听力原文:M: I'm going to the registrar first, and then to the accountant's, and after that I have to prepare my speech for tomorrow's lecture. W: Oh, I say you've got a pretty busy day, Mike. What do we k...
A.
Mike is almost as busy as she is.
B.
Mike has to go to many places.
C.
Mike has to do a lot today.
D.
Mike is busy preparing his lecture.
【判断题】避雷线和导线常用材料是一样的。
A.
正确
B.
错误
【单选题】一平面简谐波的表达式为 .在 t = 1 / n 时刻, x 1 = 3 l /4 与 x 2 = l /4 二点处质元速度之比是
A.
- 1 .
B.
C.
1 .
D.
3
【单选题】一平面简谐波的表达式为:y=Acos2π(vt-x/λ)。在t=1/v时刻,x 1 =3λ/4与x 2 =λ/4二点处质元速度之比是()
A.
-1
B.
1/3
C.
1
D.
3
【单选题】某商品流通企业经销的某种机械产品的销售价格为2600元/台,该种机械产品的变动成本为2300元/台,固定成本分摊为9万元。该种机械产品的保本销售额为( )万元。【2008年真题】
A.
26
B.
52
C.
78
D.
92
【单选题】一平面简谐波的表达式为 .在 t = 1 / n 时刻, x 1 = 3 l /4 与 x 2 = l /4 二点处质元速度之比是( ).
A.
-1
B.
1/3
C.
1
D.
3
【单选题】I want to be an accountant中accountant的意思是 ?
A.
会计
B.
营销
C.
数量
【单选题】听力原文:Why don't I give you my accountant's number? (A) I've used him for three years. (B) No, I don't have an accountant. (C) That would be very helpful. (19)
A.
B.
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