患者,女,30岁。家人发现其神志不清2小时,双瞳孔缩小,呼气有大蒜味,可能的病因是
A.脑出血B.脑膜炎C.脑炎D.有机磷农药中毒E.安眠药中毒
参考答案:D
Last weekend we had great fun ___________ on the beach.[ ]
A. played
B. to play
C. playing
D. play
发射机图是RF部件的框图。据图简述雷达收到的回波信号进入接收机的流程,含经过的每个部件名称。