Yuan Longping is a man who 1.w    the land, does his research and grows hybrid rice. He is an agricultural 2.p       . He 3.d      his whole life to finding ways to increase the rice output without 4.e       the area of fields. 5.T      to his research, more people can be free from 6.h     .Yuan is 7.s     with his life. He enjoys 8.l      to violin music. He cares little about his money and fame. He 9. t________ gives millions of yuan to 10. e_______     others for their research. He is a great person.

具有如下现象的钢筋不得使用()

A、钢筋除锈后如有严重的表面缺陷 

B、带有颗粒状或片状老锈的钢筋 

C、钢筋的表面有油渍、漆污 

D、冷弯不合格