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【单选题】
色谱峰顶点与基线之间的垂直距离是A.
基线
B.
峰底宽
C.
峰高
D.
保留值
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【单选题】It is the author's view that in human civilization, agriculture ______.
A.
is the most important step man has ever made
B.
is only less important than the domestication of animals
C.
and fire are of the same importance
D.
can be ranked in importance with the invention of machines
【单选题】Many people think that English is _____ of all the subjects.
A.
important
B.
more important
C.
most important
D.
the most important
【简答题】____ Many countries import most of the oil they use.
【单选题】For most importers, they prefer ______ import ______ FBO basis.
A.
with, on
B.
to,on
C.
at, under
D.
for,upon
【简答题】抗甲状腺药物丙基硫氧嘧啶、他巴唑最严重的不良反应是粒细胞缺乏，低于多少时停药（ ）。
【单选题】which of the following methods is the most import for health assessment ( )
A.
interview
B.
laboratory examination
C.
observation
D.
physical examination
E.
reading data
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