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【判断题】
组成RNA的碱基主要通常有四种,即A、U、G、C。A.
正确
B.
错误
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【单选题】(1)In the late 1800s, the lines between social classes tended to blur in the large cities, much to the discomfort of the wealthy who struggled to separate themselves from the hoi polloi in various way...
A.
Also
B.
For one thing
C.
Another
D.
Eventually
【单选题】Use the Chart function to view and determine the punctuation patterns for the transition word however in the concordance lines and check in which register it is mostly frequently used:
A.
Spoken
B.
Fiction
C.
Newspaper
D.
Academic
【判断题】Transition lines in a casting part are not real projections of outlines of the part, they are drawn in thin solid lines.
A.
正确
B.
错误
【简答题】Complete the following sentence with the words and phrases given in the box. (Text I breakdown/economical/epitomize/glimpse/small wonder Text ll overshadow/soar/ based on/compete for/in addition (to) ...
【单选题】How many lines can be expected for the 3 2 D->3 2 P transition in sodium? ( )
A.
2
B.
1
C.
5
D.
3
【单选题】若进栈序列为1，2，3，4，进栈过程中可以出栈，则下列不可能的一个出栈序列(32)。
A.
1，4，3，2
B.
2，3，4，1
C.
3，1，4，2
D.
3，4，2，1
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