增大下列哪个参数,可以降低掉话率,但却会降低网络的寻呼成功率和覆盖。()
A、SACCH复帧数
B、RACH最小接入电平
C、扩展传输时隙数
D、小区重选偏移
参考答案:B
He _____ his first wife soon after his graduation from university but _____her a month later._
A.married with; separated
B.married to; got separated
C.was married; separated with
D.married; separated from
tRNA的二级结构是
A.双螺旋B.超螺旋C.线型D.三叶草型E.倒“L”型