高压安全注射系统﹝压水堆﹞ high head safety injection system
参考答案:
失水事故后,反应堆冷却剂系统处于高压时投入使用的安全注射系统。
It is the third time ________ I have been here. [ ]
A. which
B. who
C. that
试论法律的局限性。