企业计算缴纳的教育费附加，应当计入（）。 A.主营业务成本 B.其他业务成本 C.营

阅读填空。

     Some (1) m______ stars and pop singers are very (2) p______. They often appear (出现) in (3) d______

images. Demi Moore is a great actress. Now, she (4) h______ a new image.

     She doesn't (5) h______ long hair. She has very (6) s______ hair. And she doesn't (7) w______ jeans or

T-shirts. She wears a (8) p______ of earrings. And she does not have a (9) m______ build. She's thin.

Sometimes people can (10) k______ her in the street.

关于声现象，下列说法正确的是（　　）

A．物体不振动可能也会发出声音

B．声音在空气和水中的传播速度不同

C．减少噪声的唯一方法是不让物体发出噪声

D．“公共场所不要大声喧哗”是要求人们在公共场所说话音调放低些

函数y=2x²-3x+4经过的象限是[ ]

A. 一、二、三象限

B. 一、二象限

C. 三、四象限

D. 一、二、四象限

腰椎侧隐窝的后界是（）

A、上关节突 

B、下关节突 

C、椎体后缘 

D、椎板 

E、椎弓根 

供、卸油系统的一次电源直接来至输煤变压器。