使用胎儿电子监护,提示胎儿缺氧的是()
A.胎心率加速
B.早期减速
C.晚期减速
D.变异减速
E.NST试验无反应型
参考答案:C, E
国际惯例中,广告代理的佣金价格是实在的版面价格乘以( )
A.5%
B.10%
C.15%
D.20%
---How many teachers are there in your school?
---I’m not sure about it. Maybe .
A.hundred
B.hundreds
C.hundreds of
D.one hundred