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【单选题】
技术装备程度低、产品成本中活劳动所消耗所占比重大的企业，是（）企业。A.
资金密集型
B.
劳动密集型
C.
技术密集型
D.
知识密集型
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皮皮学刷刷变学霸
举一反三
【单选题】We’ll our homework to our teacher email.
A.
sent,by
B.
send ,by
C.
send ,on
D.
sent, on
【单选题】—— Alice looks sad. Did you tell her about the accident? ——— Yes， but I ________ her just before her final exams.
A.
shouldn’t tell
B.
shouldn’t have told
C.
needn’t tell
D.
mustn’t have told
【简答题】2kV= V ,610mV= V,1mV= μV= V
【单选题】——Alice looks sad. Did you tell her about the accident? ——Yes, but I ______ her just before her final examinations.
A.
should have told
B.
shouldn’t have told
C.
needn’t have told
D.
must have told
【单选题】--- Alice looks sad. Did you tell her about her brother’s accident? --- Sorry, I ________ her just before her final exams.
A.
can’t tell
B.
mustn’t have told
C.
needn’t tell
D.
shouldn’t have told
【单选题】交流电梯额定速度不超过1m/s时，渐进行安全钳动作速度V应()M/S。
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