【单选题】Up till now we _______ four units and this will be the second time that we _______ a test.
A.
have finished; have had
C.
have finished; are to have
【简答题】中度颠簸时,洗手间的返回作为指示灯会闪烁,提醒洗手间内的旅客 [填空(1)]A. 不要返回座位
【简答题】中度颠簸时,洗手间的返回作为指示灯会闪烁,提醒洗手间内的旅客 [填空(1)]
【单选题】心慌、咳嗽,烦躁不安。体检:端坐位,口唇发绀,颈静脉怒张。心界向两侧扩大,心音减弱,两肺底有细湿性啰音。最可能发生的情况是