目前治疗食管胃底静脉曲张破裂出血的重要手段是()
A.三腔二囊管
B.手术
C.胃镜
D.血管加压素
E.生长抑素
参考答案:E
Read and choose. (选出合适的答句)
( )1. Let's watch TV!
( )2. How many crayons do you have ?
( )3. Who's that woman?
( )4. Where are you from?
( )5. Is he your brother?
A. Filteen.
B. I'm from China.
C. Great !
D. No , he's my friend.
E. She's my mother.
下列说法正确的是( )
A.1摩尔的气体只有在标准状况下才能是22.4升
B.同温同压下,相同体积气体所含原子个数相同
C.标准状况下1摩尔的水的体积约为22.4升
D.同温同压下,相同体积的H2、O2,其质量比为1:16