急性胸外伤中绝对必须进行紧急开胸探查的手术指征是()
A.胸内子弹留存
B.多根多处肋骨骨折合并血气胸
C.张力性气胸
D.气胸闭式引流后仍持续大量漏气
参考答案:D
下列实例不能体现细胞膜结构特点的是[ ]
A.白细胞吞噬绿脓杆菌
B.精卵细胞结合
C.小肠细胞分泌消化酶
D.效应T细胞与靶细胞紧密接触
________ the bad weather we enjoyed our holiday very much.
A.As the result of
B.In spite of
C.Because of
D.According to