胆总管引流选用
A.橡皮片引流条B.T型引流管C.凡士林纱布引流条D.烟卷引流条E.橡皮管引流
参考答案:B
解析:A、C、D均用于液体引流,B专用于胆总管引流。
What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology.
A.have not been paying
B.had not been paying
C.were not paying
D.will not be paying
一试管中装有某种液体,在试管处于图中所示的甲、乙、丙三个位置时,管内液体质量保持不变,则试管底部受到的液体压强( )
A.甲位置最大
B.乙位置最大
C.丙位置最大
D.三个位置一样大