医院的医疗服务成本测算分为医院成本测算、科室成本测算和()等三个层次。
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The author of the report is well ________ with the problems in the hospital because
A. informed
B. acquainted
C. enlightened
D. acknowledged
None of us expected the chairman to ________ at the party. We thought he was still
A. turn in
B. turn over
C. turn up
D. turn down