石油化工企业面积小于()㎡的甲、乙、丙类房间,可只设1个安全疏散门。
A、50
B、60
C、100
D、200
参考答案:C
下列不参与构成Guyon管的是()。
A.头状骨
B.钩骨
C.屈肌支持带
D.小鱼际腱弓
E.豆状骨
— Hello, this is Tina speaking. Is that Sam?
— Sorry, he isn't here at this moment. _____? [ ]
A. Can I take a message
B. What are you saying to Tina
C. May I speak to Sam
D. Who's that speaking