China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing

boats from ________ in the South China Sea.[ ]

A. attacking  

B. having attacked

C. being attacked  

D. having been attacked

一般临时设施区，每100m²应配备10L灭火器的个数为（）

A.1个

B.3个

C.2个

D.4个