成型工序是指坯料受外力后,应力超过了材料的屈服点,经过()变形成为一定形状的加工工序。
A.弹性
B.塑性
C.韧性
参考答案:B
胃、十二指肠溃疡()
A.伴有寒战、高热,并出现黄疸,可触及肿大的胆囊
B.进行性体重下降、厌食,出血似黑粪为主,呕血少见
C.出血量大,伴肝掌,肝脾肿大,腹壁皮下静脉曲张
D.继发于休克、脓毒症、烧伤、大手术或中枢神经系统损伤后
E.出血部位常位于胃小弯或十二指肠球部
句型转换
小题1:I saw the film 2046 just now.(用just做状语)
I ________ just___________ the film 2046.
小题2:I’ve read this book.(改为一般疑问句)
__________ __________ read this book?
小题3:She’s already done her homework.(改为否定句)
She__________ _________ her homework __________.
小题4:I’ve known him since he came him.(对划线部分提问)
__________ __________ _________you known him?
小题5:Has Danny come?(作否定回答)
________, he_________.