题目内容

为幽门梗阻患者洗胃时,宜在饭___ h或___ 时进行。

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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

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