简述空井发生溢流时的关井程序?
参考答案:
1)发出信号;
2)开液(手)动放喷闸阀;
3)关防喷器;
4)关节流阀和J2a闸阀;
5)观察并报告。
有基准地价的地区,协议出让最低价不得低于出让地块所在级别基准地价的50%。( )
______ is this T-shirt? [ ]
A. How much
B. What much
C. How many
D. What many