以上具有保护力的是
A.抗HAV-IgM
B.抗HAV-IgG
C.抗HBc
D.抗HBs
E.抗HBe
参考答案：D
________ he driven more carefully, the accident would not have happened the other day.
A．Be
B．Had
C．Has
D．Would have
饰面工程外观质量要求有些哪
