【单选题】It's hot in the room. You'd better ______ the windows. [ ]
【单选题】By hiking, people can _____ nature and experience a kind of life. [ ]
【判断题】设S={1,2},则S在普通加法和乘法运算下都不封闭。( )
【单选题】—Would you mind________the window? It’s a bit cold. —_________.
A.
close;Of course,close it
B.
to close;Certainly,do please
【单选题】They are standing ____ together. [ ]
【单选题】防雾灯分前雾灯和后雾灯,前雾灯颜色一般为( ),后雾灯为( )。
【单选题】防雾灯分前雾灯和后雾灯,前雾灯颜色一般为( )后雾灯则为
【单选题】防雾灯分前雾灯和后雾灯,前雾灯颜色一般为( ),后雾灯为( )。
【单选题】防雾灯分前雾灯和后雾灯,前雾灯颜色一般为(),后雾灯则为()。
【单选题】当流动资产占用量不变时,由于销售收入减少会形成流动资金的( )