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【多选题】
选出与制动助力器检查相符合的选项.()A.
踩下制动踏板几次后，制动助力器操作正常，无相关变化.
B.
发动机不运转时，踩几次制动踏板，制动助力器会发生泄漏。而在踩下制动踏板时，起动发动机，制动踏板随之向下移动
C.
发动机不运转时，踩几次制动踏板，制动助力器工作正常。而在踩下制动踏板时，起动发动机，制动踏板将随之向下移动.
D.
发动机熄火后，马上踩制动踏板几次，制动助力器工作正常，踏板会持续变短
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举一反三
【单选题】Nick is very happy at the beginning of the scene. His mood first changes because he realizes that
A.
Talia didn't record the conversation
B.
Talia feels awful about the tape
C.
Talia is upset about something
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A.
To refrain from taking pictures
B.
To refrain from using a mobile phone
C.
To arrive an hour early the following day
D.
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【单选题】_____ vary from individual to individual, from culture to culture, from generation to generation, from society to society.
A.
Denotative meanings
B.
Collcational meanings
C.
Connocative meanings
D.
Stylistic meanings
【单选题】【B4】
A.
from mouth to mouth
B.
from door to door
C.
from the masses to the masses
D.
from side to side
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