下列说法正确的是( ) A.发射电磁波要使用振荡器、调谐器和天线 B.接收电磁波

题型:选择题

问题:

下列说法正确的是(  )

A.发射电磁波要使用振荡器、调谐器和天线

B.接收电磁波要使用天线、调制器、检波器和喇叭

C.电磁波只能传递声音,不能传递图象

D.电磁波的传播速度为3×108m/s

考点:电磁波的传播广播、电视
题型:选择题

小题1:A: A computer is on the teacher’s desk.

B: ________ ________ a computer on the teacher’s desk.

小题2: A: We play basketball on Wednesday, Friday and Saturday.

B: We play basketball ________ ________ a week.

小题3:A: Shall we go to see a film together?

B: ________ ________ go to see a film together?

小题4:A: Kate went to bed after she finished her homework.

B: Kate ________ go to bed ________ she finished her homework.

小题5:A: Whose China Today is this?

B: Who(m) ________ this China Today ________ to?

小题6:A: Could you tell me how I can get to the nearest supermarket?

B: Could you tell me ________ ________ to the nearest supermarket?

题型:选择题

大面积烧伤功能部位创面常用()

A.培养细胞膜片

B.刃厚皮

C.中厚皮

D.全厚皮

E.微粒皮

题型:选择题

紧脉的主病是()()、宿食。

题型:选择题

物业保修期满后,物业共用设备的更新改造费用应该()

A.由建设单位负担

B.由物业管理企业从物业服务费中支出

C.由业主集资

D.从专项维修资金中支出

题型:选择题

身热下利,肛门灼热,苔黄脉数,治宜:().

A.黄芩汤

B.葛根黄芩黄连汤

C.调胃承气汤

D.导赤承气汤

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