单纯性机械性肠梗阻腹痛的原因是()
A.炎症渗液刺激腹膜
B.粳阻部位以上肠管强烈蠕动
C.梗阻部位以下肠管痉挛
D.梗阻部位肠管坏死
E.腹腔内脏神经受到刺激
参考答案:B
David and James are going to watch the basketball game. Between HOUSTON ROCKETS and PHOENIX SUNS. They just have $25. From the poster, we know they can buy two tickets.
[ ]
A. red
B. green
C. blue
可燃物品库房可采用卤钨灯作照明灯具,但其引入线应采取保护措施。( )