听力chapter 12对话6-10

6、A. Not operational

B. Not in positon

C. Not accessible

D. Missing

7、A. Todecrease pressure

B. To increase pressure

C. To free the water pipe

D. To repair the water pipe

8、A. To decrease pressure

B. To increase pressure

C. To free the water pipe

D. To repair the water pipe

9、A. The sprinkler system

B. The ventilation system

C. The fixed foam extinguishing system

D. The fixed gas fireextinguishing system

10、A. The sprinkler system

B. The ventilation system

C. The fixed foamextinguishing system

D. The fixed gas fire extinguishing System

以上10题考试遇到几率不高，有能力就听，听不出来考试遇到了随便选