急性动脉栓塞的临床表现是()
A.Perthes试验
B.Trendelenburg试验
C.Pratt试验
D.Branham征
E.5P征
参考答案:E
If a lot of people say a film is not good, I won't bother to see it, or I'll wait ________ it comes out on
DVD.[ ]
A. whether
B. after
C. though
D. until
一般认为,控制厌氧处理效率的基本因素有两类,即()和()。