题目内容

手术时可能带有污染的切口是：

A. I类切口
B. Ⅱ类切口
C. Ⅲ类切口
D. 甲级愈合
E. 乙级愈合

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承包人在收到履约证书后（）天内，应向工程师提交按照工程师批准的格式编制的最终报表草案并附证明文件。

A. 21
B. 27
C. 36
D. 56

Yesterday's strike caused complete confusion for ______.

A. employers
B. commuters
C. bus drivers
D. tourists

America will never again have as a nation tee spirit of adventure as it ______ before the West was settled.

A. has
B. did
C. was
D. would

为防止被消除需要快速静脉注射的药物是

A. 地尔硫卓
B. 腺苷
C. 胺碘酮
D. 普萘洛尔
E. 苯妥英钠