除()外,不得以机关名义向上级机关负责人报送“请示”、“意见”和“报告”。
A.上级机关负责人直接交办的事项
B.重大事项
C.急件
D.密级文件
参考答案:A
甲氧氯普胺(胃复安)具有强大的中枢性镇吐作用,是因为
A.阻滞了吗啡受体
B.阻滞了多巴胺受体
C.激活了多巴胺受体
D.激活了吗啡受体
E.阻滞了H1受体
—I know nothing about the history of the telephone. Could you tell me ?
— Yes, in 1876
A.who invented the telephone
B.how the telephone was invented
C.when was the telephone invented
D.when the telephone was invented