为脑出血昏迷的病人进行口腔护理时，应禁忌()

A．头偏向一侧

B．取下义齿，放冷水中保存

C．加紧棉球擦拭

D．棉球湿度以不滴水为宜

E．擦拭后漱口

The loran lines drawn on navigation charts represent（）.

A.Ground waves

B.Skywaves

C.Either ground waves or skywaves interchangeably

D.An average between ground wave and skywave positions