题目内容
(请给出正确答案)
[单选题]
Today, all babies usually get vaccines ___ the hepatitis B virus, but there is not yet a vaccination for hepatitis C.
A.against
B.again
C.to
提问人:网友lixin080108
发布时间:2022-01-07
A.against
B.again
C.to
A、segmentation genes
B、gap genes
C、homeotic genes
D、pair-rule genes
E、segment-polarity genes
A、Conversely; firm
B、. On the other hand; staunch
C、On the contrary; resolute
D、Conversely; determined
B.won’t go
C.not go
D.not to go
B.轴力一定最大,且面积一定最小
C.轴力不一定最大,但面积一定最小
D.轴力与面积之比一定最大
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