传感器安装时，应该考虑方向的是（）。
A、雨量
B、温湿度
C、风向
参考答案：C
_____ made our school proud was _____ more than 90% of the students had been admitted to key universities.
A．What ; because
B．That; what
C．That; why
D．What ; that
关于房性期前收缩，提前出现的QRS波的特点（）
A．其形态与正常QRS波相同
B．QRS波前无相关的P波
C．QRS波群宽大畸形
D．多伴有完全代偿间歇
