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【多选题】
地铁电动列车采用再生制动，它的优点是可以降低闸瓦的磨耗，并且可以节约电能。()A.
制动力恒定
B.
可以降低闸瓦的磨耗
C.
并且可以节约电能
D.
停车平稳
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反馈参考答案：
举一反三
【单选题】Because of the patient’s health, ____________ .
A.
losing weight was advised him by doctor
B.
he was advised by the doctor to lose weight
C.
the doctor’s advise was him losing weight
D.
lose weight was what the doctor advised
【单选题】The patient’s health failed to such an extent that he was put into _____ care.
A.
intensive
B.
rigid
C.
tense
D.
tight
【单选题】The patient’s health failed to such an extent that he was put into ____ care.
A.
tense
B.
intensive
C.
rigid
D.
tight
【单选题】Because of the patient’s health,_____.
A.
losing weight was advised him by the doctor
B.
he was advised by the doctor to lose weight
C.
the doctor’s advice was him losing weight
D.
lose weight was what the doctor advised
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