肺部疾病升高最明显的乳酸脱氢酶同工酶是（）
A.LDH1
B.LDH5
C.LDH4
D.LDH2
E.LDH3
参考答案：E
How are you?----______________
A．How are you ?
B．Thank you
C．Fine, thank you.
D．Good.
油泵倒泵时应注意哪些问题？
