在生命质量评价中，“角色功能受限”反映病人的
A．生理状态
B．心理状态
C．社会功能状态
D．主观判断与满意度
E．生理、心理、社会功能状态
参考答案：E
The number of people invited_______ fifty, but a number of them_______ absent for different reasons.
A．were, was
B．was, were
C．was, was
D．were, were
对自然循环汽包锅炉的水压试验有何要求？
