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【单选题】
巡航控制系统是20世纪60年代发展起来的又称()
A.
空气供给系统
B.
空气循环系统
C.
恒速行驶系统
D.
排放控制系统
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【单选题】 “I’d like________ information about the management of your hotel, please.” “Well, you could have________ word with the manager. He might be helpful.”
A.
some; a
B.
an; some
C.
some; some
D.
an; a
【单选题】 I’d like to know what you did____________ Christmas.
A.
on
B.
in
C.
at
D.
from
【单选题】不用于衡量色谱柱柱效的物理量是( )
A.
理论塔板数
B.
塔板高度
C.
色谱峰宽
D.
组分的保留体积
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【单选题】不用于衡量色谱柱柱效的物理量是( )
A.
理论塔板数
B.
塔板高度
C.
色谱峰宽
D.
组分的保留体积
E.
以上都不对
【单选题】 I’d like to join the tennis club________which my friend belongs.
A.
to
B.
for
C.
with
D.
in
【单选题】 —Can I help you? —I’d like to buy a present for my father’s birthday, ________ at a proper price, but of great use.
A.
that
B.
anyone
C.
one
D.
everything
【单选题】 I’d like to swim eastwards, but he took the__________direction and swam westwards.
A.
country
B.
constant
C.
county
D.
contrary
【多选题】传统电子商务与移动电子商务的辨析点是()。
A.
时间
B.
空间
C.
成本
D.
效率
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