编码为HIV包膜gp120的基因是()A、gag B、env C、pol D、E6

题型:单项选择题

问题:

编码为HIV包膜gp120的基因是()

A、gag

B、env

C、pol

D、E6

E、LTR

考点:微生物学微生物的营养微生物的营养题库
题型:单项选择题

Which of the following statements regarding portfolio theory is least likely correct()

A. The covariance between the returns on a security and those of the overall market, divided by the variance of the market returns, is a measure of the security’s systematic risk.

B. All securities and portfolios plot on the SML when their prices are in equilibrium.

C. A security that lies on the CML must be priced at its equilibrium level.

题型:单项选择题

简述你平台井控装置的基本组成。

题型:单项选择题

关于中华人民共和国货物原产地证明书,下列表述错误的是( )。

A.货物确系中华人民共和国原产的证明文件

B.进口国海关对该进口商品适用何种税率的依据

C.出口报关的必备证件

D.各地商检局和贸促会均可签发此证

题型:单项选择题

主要作用于M期的抗肿瘤药是

A.甲氨蝶呤
B.长春新碱
C.氟尿嘧啶
D.环磷酰胺
E.巯嘌呤

题型:单项选择题

商品编码应遵循的原则有()

A.多样性原则

B.简明性原则

C.层次性原则

D.灵活性原则

E.自检能力原则

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