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【单选题】
按《公路工程质量检验评定标准》（JTG F80／1-2004）进行质量评定时，工程质量等级评定分（ ）。A.
合格、不合格
B.
优良、中、不合格
C.
优良、合格、不合格
D.
中、不合格
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反馈参考答案：
举一反三
【多选题】Mark Twain had led an active life in the very center of the American experience. He had been a____________ .
A.
printer, pilot, soldier
B.
silver-minor, gold-washer
C.
lecturer, traveler, businessman
D.
novelist, autobiographer
【单选题】Few people believed the dam had been burst because there had been too many false alarms.
A.
Y
B.
N
C.
NG
【简答题】链传动的类型为（）链传动、（）链传动、（）链传动。
【单选题】Fewer people would have died if______.
A.
more announcements had been made
B.
people hadn't used the lifts
C.
the people had obeyed the office
D.
the incident had happened on a weekend
【简答题】链传动的类型为___链传动、___链传动、____
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