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【多选题】
钢筋冷拔是在常温下通过特制的钨合金拔丝模多次拉拔成比原直径小的钢筋，使钢筋产生塑性变形，冷拔后的钢筋( )。A.
抗拉强度提高
B.
塑性提高
C.
抗拉强度降低
D.
塑性降低
E.
硬度提高
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皮皮学刷刷变学霸
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【简答题】I am heartily grateful to your help．
【简答题】I can't thank you much for your kindness，because without your help I can’t have succeeded in the exam．
【简答题】_____for your help．
【单选题】How did Taylor do when she wrote her own name?
A.
She did quite well with first two letters.
B.
She couldn't write even one letter.
C.
She lost interest in the game from the very beginning.
D.
She wrote her name on the author's arm.
【简答题】Become a volunteer and help those who need your help in your community ( 社区 )！ Volunteer work includes helping the poor, helping the families whose houses were destroyed by natural disasters ( 灾害 ) or...
【简答题】阅读理解。 Become a volunteer and help those who need your help in your community! Volunteer work includes helping the poor, helping the families whose houses weredestroyed by national disasters or creatin...
【单选题】患者女, 59岁。有风湿病7年,近1年反复出现劳动后呼吸困难。 2天前上楼时突然出现心前区疼痛、黑曚,患者最可能并发了
A.
二尖瓣狭窄
B.
二尖瓣关闭不全
C.
主动脉瓣狭窄
D.
充血性心力衰竭
E.
主动脉瓣关闭不全
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