下列哪种酶不能用于标记抗体？（）
A.胰蛋白酶
B.辣根过氧化物酶
C.酸性磷酸酶
D.碱性磷酸酶
E.葡萄糖氧化酶
参考答案：A
利用财务报表提供的数据，常用的有两种类型：_________和_________。
When a rescue vessel approaches a lifeboat in heavy seas，the person in charge of the lifeboat should（）.
A.tie up to the rescue vessel
B.transfer only those personnel who are not seasick
C.wait for calmer weather before transferring personnel
D.transfer all personnel immediately
