数字网的常见同步方式有主从同步和()同步。
参考答案:伪
the red switch on the left and the flying machine will swiftly go up into the air and its journey.
A.Press, begins
B.Press, begin
C.Pressed, begins
D.To press, to begin
反复使用吗啡会产生()
A.生理依赖性
B.首剂现象
C.耐药性
D.耐受性
E.致敏性