人工预算单价是指生产工人在单位时间(工时)的费用。其计算通常针对有效工作时间而定，关于有效工作时间的规定是：年应工作天数（）工日；日工作时间8工时/工日。
A. 250
B. 251
C. 312
D. 289
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Which of the following best describes the writers attitude toward most of the nursing homes, and convalescent hospitals？
A. Sympathetic.
B. Unfriendly.
C. Optimistic.
D. Critical.
课程计划的中心问题是（）
A. 开设哪些科目
B. 各门学科开设的顺序
C. 各门学科的教学时间
D. 各门学科的教学方法
A.twice as muchB.twice as manyC.as much as twiceD.as many as tw
A. twice as much
B. twice as many
C. as much as twice
D. as many as twice
A.principleB.formC.methodD.kind
A. principle
B. form
C. method
D. kind
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