发射机的基本组成是（）.
A.振荡器，调制器，放大器
B.检波器，调制器，放大器
C.振荡器，解调器，放大器
D.振荡器，混频器，放大器
参考答案：A
The traffic police stopped three trucks heavily loading with merchandise that looked as grain bags.
A．that were loading ... like
B．loaded with ... like
C．to load with ... for
D．loaded with ... for
治疗疫毒痢的主方是（）
A.芍药汤
B.白头翁汤
C.葛根芩连汤
D.香连丸
E.枳实导滞丸
