不加工的铸件表面不允许有裂纹、欠铸、疏松和任何穿透性缺陷。（）
参考答案：对
A banker’s acceptance that is priced at $99145 and matures in 72 days at $100000 has a (n):（）
A. money market yield greater than its discount yield.
B. discount yield greater than its bond equivalent yield.
C. money market yield greater than its bond equivalent yield.
下列哪项对诊断原发性肝癌有较高特异性
A．B超检查B．甲胎蛋白测定C．核素显像D．碱性磷酸酶E．乙肝病毒感染标志
