为幽门梗阻患者洗胃时,宜在饭___ h或___ 时进行。
查看答案
9.常用的呼吸机分为 ___ 型,___ 型和混合型。
The polluted air in the city is badly ___________ the health of the residents.
A. detrimental
B. endangering
C. combating
D. reinforcing
Getting this contract is __________ to the future of his firm.
A. crucial
B. complicated
C. attainable
D. manageable
The director's childhood experience has a ________ impact on his film.
A. found
B. professional
C. profound
D. punctual