食管癌术后并发吻合口瘘伴胸腔感染,引流液的颜色常为()。
A.红色
B.淡红色
C.乳白色
D.浑浊
E.清亮
参考答案:D
Though Mark wasn't well educated, his common _____ guided him through a life.[ ]
A. sense
B. ground
C. place
D. practice
电造给矿输采用()
A.链式输送机
B.刮板皮带运输机
C.螺旋