在神经骨骼肌接头处，消除乙酰胆碱的酶是
A．腺苷酸环化酶
B．ATP酶
C．胆碱脂酶
D．单胺氧化酶
E．Na+-K+依赖式ATP酶
参考答案：C
— I have a cold. I can't go to the party.
— ___________________[ ]
A. Excuse me.
B. What's the matter?
C. I'm sorry to hear that.
D. OK.
安全工作的总要求是什么？
