让渡资产使用权收入的确认应该同时满足两个条件，即相关经济利益很可能流入企业，并且收入的金额能够可靠计量。
参考答案：对
— The window must have taken you quite a lot of time that day.
— Right. They____ for weeks.
A．haven’t been cleaned
B．hadn’t been cleaned
C．didn’t clean
D．haven’t cleaned
集箱本体上最短一节的拼接长度不小于相关标准数值，且不小于集箱本体的公称外径。( )
