双工制指通信的双方，收发信机均（）工作，即任一方在发话的同时，也能收听到对方的话音。
参考答案：同时
85×99+85=85×（99+1）这里应用了______律．
This umbrella is____that one,but____than that one.
A．as beautiful as,expensive
B．as beautifully as,more expensive
C．as beautiful as,more expensive
D．more beautiful as,as expensive
