安全技术交底必须()。
A.具体
B.明确
C.针对性强
D.含混
E.不需要具体
参考答案:A, B, C
--- The dish looked bad, but it_______ OK.
--- So it's not right to judge a man by his appearance.
A. tastes
B.was tasting
C.was tasted
D.tasted
关于败血症的产前感染途径,以下哪项是错误的()
A.孕母妊娠后期有菌血症
B.羊膜囊穿刺
C.经宫颈取绒毛标本
D.宫内输血消毒不严
E.经脐部感染胎儿