《城镇燃气设计规范》GB50028将燃气管道按压力分为()。
A.3级
B.4级
C.5级
D.6级
参考答案:B
阅读并判断正(T)误(F)。
My name is Jenny. I'm ten years old. I come from Canada. I'm a girl. My friend is Li Ming. He comes
from China. He is nine years old. He is a boy. We study very hard. Our favourite colour is red.
( ) 1. Jenny comes from Canada.
( ) 2. Jenny is nine years old.
( ) 3. Jenny's friend is Li Ming.
( ) 4. Li Ming is a teacher.
( ) 5. Red is Jenny's favourite colour.
若某方案现值指数小于l,下列说法正确的是()
A.未来报酬总现值小于投资额现值
B.未来报酬总现值大于投资额现值
C.未来报酬总现值等于投资额现值
D.未来现金流入等于投资额现值