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【单选题】
目前天然气常规站(标准站)工艺流程最常用的是( )A.
三级操作系统
B.
操作系统
C.
定时加气系统
D.
直加换向系统
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举一反三
【单选题】It was _____ she took off her dark glasses _____ she was a famous film star. [ ]
A.
when, that didn't realize
B.
not until, that I realized
C.
not when, when I realized
D.
until, that I didn't realize
【单选题】But we can’t head back when it ______ dark, right?
A.
got
B.
gets
C.
getting
D.
is getting
【单选题】'How dark your brother's hair is!''It's ________ mine when I was at his age.'
A.
no darker than
B.
no more darker as
C.
not dark more than
D.
not darker as ~
【单选题】It was not he took off his dark glasses I realized he was a famous singer.
A.
when; that
B.
until; that
C.
until; when
D.
when; then
【单选题】It was not _____ she took off dark glasses _____ I realized she was a famous film star. [ ]
A.
when; that
B.
until; that
C.
until; when
D.
when; when
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