路线平面图的任务是表达（）的平面状况（直线和曲线）以及沿线两侧一定范围内的地物、地面起伏情况，与路线的相互关系。
A、路中线
B、路线
参考答案：B
某人在湖中划船时，使船前进的动力是（ ）
A．浆对水的力
B．水对浆的力
C．人对水的力
D．人直接对船的力
Before a transesophageal echocardiogram, a client is given an oral topical anesthetic spray. Upon return from the procedure, the nurse observes that the client has no active gag reflex. In response, the nurse should（）
A. insert an oral airway.
B. withhold food and fluids.
C. position the client on his side.
D. introduce a nasogastric (NG) tube.
