可以作为一手住房贷款购房首付款证明的是（）。
A．借款人存折
B．开发商出具的正式发票
C．建筑商出具的收据
D．存入售楼员账户的汇款凭证
参考答案：B
The ______ contract is a contract between a party who agrees to accept the risk and a party seeking protection from the risk.
A．payment
B．production
C．shipment
D．insurance
多用于急性心肌梗死诊断的酶是（）
A.ALP和CK
B.ALT和AST
C.CK和CK-MB
D.AST和AMY
E.r-GT和ALT
