双胍类降糖药最常见的副作用为()
A.低血糖
B.乳酸性酸中毒
C.胃肠道反应
D.过敏性皮疹
E.肝功异常
参考答案:C
So far only four of the 77 Chinese children who went missing from a home in Britain last month ________, according to The Guardian.
A.have found
B.found
C.have been found
D.were found
接触线和承力索的张力和弛度的安全值:全补偿链形悬挂弛度允许误差为()%。
A.7
B.8
C.9
D.10