下列那些行为属于规范电价管理()
A.公开电价
B.公开收费标准
C.公开收费依据
D.无票收费
参考答案:A, B, C
My grandmother found watching TV _________ but I enjoyed it very much..
A.frustrating
B.frustrated
C.is frustrating
D.frustrate
你认为木质机的翼梁部分一般采用哪种木材()
A.桐木
B.巴尔莎木
C.松木
D.层板