固定式取水构筑物大体可分为:()
A.三类
B.四类
C.五类
D.六类
参考答案:A
—I have got a headache.
—No wonder. You ________ in front of that computer too long.[ ]
A. work
B. are working
C. worked
D. have been working
下列不属于应当征收消费税的产品是( )。
A.实本地板
B.小汽车
C.本制一次性筷子
D.手提电脑