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【单选题】
氨基酸脱下的氨基通常以哪种化合物的形式暂存和运输A.
尿素
B.
酪氨酸
C.
谷氨酰胺
D.
天冬酰胺
E.
氨甲酰磷酸
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举一反三
【单选题】The change online will lead to an opportunity for the growth of __________
A.
music websites
B.
CD sales
C.
music business
D.
MP sales
【单选题】The change online will lead to an opportunity for the growth of _________.
A.
a music websites
B.
CD sales
C.
music business
D.
MP sales
【单选题】For the online game，the most important change is
A.
diversity of the use．
B.
the way publisher earn money．
C.
the improvement of the speed．
D.
the increase of the types of video game．
【简答题】In today’s Internet age, online s can be a change from the pressure of school and work. However, they can also cause problems and unhealthy addictions. This is most clearly seen in the example of ...
【简答题】病原菌的致病性与其具有的 、侵入的 及 有密切关系。
【单选题】What is the disadvantage of studying a language online?
A.
You may not be able to keep up with the program.
B.
You may not meet your teachers in person.
C.
The computer may break down any time.
D.
The courses may last much longer.
【单选题】下述有关压力容器用液位计的叙述中，哪些不符合TSGR0004-2009《固定式压力容器安全技术监察规程》的规定（）
A.
压力容器用液位计应符合有关标准的规定和《压力容器安全技术监察规程》的规定
B.
要求液面指示平稳的压力容器不宜采用浮子（标）式液位计
C.
应根据压力容器的介质、最高工作压力和温度正确选用液位计
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