衡量肺通气功能较理想的一项指标是
A．肺活量
B．时间肺活量
C．每分肺通气量
D．每分肺泡通气量
参考答案：B
If they had known what was coming next, they __ their mind.
A．may change
B．could change
C．must have changed
D．might have changed
新增加一个项目：“一号科研楼工程”，项目编码为“999”，助记码为“KY1”
