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【判断题】
采用CIF、CFR贸易术语,合同中只规定装运期或交货期,而采用CIP、CPT贸易术语,合同中不但应规定装运期,还规定货物到达目的地的日期A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Which one of the following is not safety precaution?
A.
The safety cap.
B.
B Safety shoes
C.
C The jacket
D.
D Working clothes
【单选题】Which one of the following is true of both eukaryotic and prokaryotic gene expression and would therefore not be an effective target for drug development?
A.
After transcription, a 3 ′ -poly(A) tail and a 5 ′ -cap are added to mRN
B.
Translation of mRNA can begin before transcription is complete.
C.
mRNA is synthesized in the 3 ′ -to-5 ′ direction.
D.
RNA polymerase binds at a promoter region upstream of the gene.
E.
Mature mRNA is always precisely collinear to the gene from which it was transcribed.
【简答题】软件测试与调试的主要区别是什么?
【单选题】Which one of the following statements about catabolite-regulated operons is false?
A.
cAMP receptor protein (CRP) and catabolite activator protein (CAP) are different names for the same protein.
B.
when glucose is present in the cell cAMP levels fall.
C.
CRP binds to cAMP and as a result activates transcription.
D.
CRP binds to DNA in the absence of cAMP.
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