反复弯曲试验至第20次出现裂纹,则弯曲次数为()次。
A.10
B.20
C.21
D.19
参考答案:D
--Friends, we’ll graduate from middle school. We shouldn’t forget the days we spent with classmates.
--Yeah, without friends, one can’t be happy.
A. that B. when C who
急性肾盂肾炎护理措施中,下列哪项是错误的
A.卧床休息B.限制水摄入量C.按急性病期护理D.观察药物不良反应E.作尿培养时收集清晨第一次尿