【单选题】The report given by the Italian team might provide evidence that ______.
A.
two things far apart might vibrate in unison
B.
the ripples in space-time are only imagined
C.
there exist gravitational waves
D.
abrupt, violent cosmic events lead to gravitational waves
【单选题】或非门构成的基本 RS 触发器,在下列 情况处于“ 0 ” 态。
【单选题】My family doctor always calls me and ▁▁ my health.
【简答题】What might the future be like? Here are some predictions: things to come, things to go. The Spring Festival, the most important Chinese holiday when everyone returns home, has caused headaches for mil...
【单选题】患者,男性,42岁,自幼起咳嗽、咳痰、喘息,多为受凉后发作,静脉滴注'青霉素'可缓解,10~20岁无发作。20岁后又有1次大发作,发作时大汗淋漓、全身发绀、端坐不能平卧,肺部可闻及哮鸣音,静脉注射'氨茶碱、地塞米松'可完全缓解。自后反复出现夜间轻微喘息,每周发作3次以上,不能入睡,PEF变异率为35%。查体:双肺听诊未闻及干湿啰音,心率89/min。根据病情程度选择药物治疗最佳方案是
E.
每日定量吸入糖皮质激素+静脉滴注β 受体激动药