有颗粒性白细胞减少或缺乏症，血小板减少症是属于药物变态反应的 A．胃肠道损害 B．胃

Do you know that man? He is my uncle. His n_____小题1:is David Smith. He’s 40 this year. His j____小题2:is a worker. He works in a car f_____小题3:. His factory is not n____小题4: his home. So he gets up early in the morning and t_____小题5:a bus to work. At about 7:30, he gets to his factory. He m______小题6: the parts (零件) of the car. He works very hard. Everyone likes h____小题7: and says he is a good worker. He has lunch in the factory. He often plays b_____小题8: after work. In the evening, he u_____小题9: learns Chinese at home. His Chinese is good, too. Sometimes he h_____小题10:me with my Chinese. I like my uncle very much.

患者，女，40岁，车祸致胫骨平台骨折，手术切开复位，螺钉内固定，石膏托外固定，术后第2周。为防止股四头肌萎缩选用下列哪项方法

A．等速向心性运动

B．等速离心性运动

C．等张运动

D．等长运动

E．等速运动

往复泵出口安全阀是当超压时安全阀启跳，使液体回到泵入口，达到保护管线、设备的目的。

以下关于室外馈线接地的描述，正确的是（）

A、当天线安装在铁塔上时，要求在馈线在下塔拐弯前0.5米处接地。如果由此接地点到馈线入机房的长度大于30米时，在馈线进机房前再接一次地。

B、各小区馈线的接地点要分开，不能多个小区馈线在同一点接地。接地点要求接触良好，不得有松动现象，并作防氧化处理。

C、馈线的接地线要求顺着馈线下行的方向进行接地，也可以向上走线。

D、为了减少馈线的接地线的电感，要求接地线的弯曲角度大于60度，曲率半径大于200毫米。

20世纪（）年代末，随着中国改革开放的洪流，公共关系作为一门新兴的科学被引进我国。

A.60

B.70

C.80

D.90