国家行政机关收费的基本属性是()。
A.排他性
B.竞争性
C.价格
D.税收
参考答案:C
—What a nice bedroom!
—Yes, it _______every day. [ ]
A. cleans
B. must clean
C. has cleaned
D. is cleaned
自动油门使用N1表上人工设定的N1值.