喷水灭火系统产品型号由“系统代号”、“类别代号”、“特征代号”三部分组成。
参考答案:错
-Mr Li has been in hospital for 3 days.
-Oh,really.I________.________to see him after work.[ ]
A.don’t know;I’ll go
B.don’t know;I am going
C.didn’t know;I’ll go
D.didn’t know;I am going
根据《公路桥涵地基与基础设计规范》(JTJ024-85)的规定,亚黏土的划分标准是( )。
A.1<Ip≤7
B.7<Ip≤10
C.7<Ip≤17
D.Ip>17