Since rail network is not as extensive as highway network in most countries and its limitation to fixed track facilities, as a result, railroads provide () service.
A. Door to door
B. Door to cy
C. Door to cfs
D. Terminal to terminal
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改善料柱的透气性有利于使用高风温。()
A. 正确
B. 错误
5-HT功能低下()
A. 幻觉、妄想
B. 抑郁发作
C. 阿尔茨海默病
D. 躁狂发作
E. 神经衰弱
患者男,60岁。有腹股沟疝多年,搬重物时突感右下腹疼痛,伴恶心,未呕吐,压之肿块不消失,4小时后来院急诊。诊断:右腹股沟嵌顿疝。急诊观察5小时,病人右下腹痛伴腹泻,大便带血,提示可能有()
A. 肠扭转
B. 肠坏死
C. 阑尾炎
D. 肠炎
E. 肠痉挛