当混凝土强度等级为c40时，加载速率应为( )MPa/s。
A．0.1～0.5
B．0.3～0.5
C．0.5～0.8
D．0.80～1.0
参考答案：C
— What's this in English?
— It's _____ ID card. It's _____ ID card. [ ]
A. a, his
B. his, a
C. an, he
D. an, her
如果投资者认购的基金证券低于法定最低额，则证券投资基金不能成立。（）
