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麻醉前,为了预防呕吐和误吸 ,成人择期手术前必须 ( )

单选题
2021-09-01 22:48
A、禁食4h禁饮12h
B、禁食12h禁饮4h
C、禁食8h禁饮8h
D、禁食12h禁饮12h
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正确答案
B

试题解析

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