问题详情

From the discussion among some experts we may conclude that ______.
A．to avoid any accidents we should not repair the facilities in chemical industry
B．the local authorities should not be concerned with the production of the chemical industry
C．all these accidents could have been avoided or controlled if effective measure had been taken
D．natural gas stored in very large tanks is always safe请帮忙给出正确答案和分析，谢谢！