爆破时，必须严格执行“一炮三检制”，防止（）超限。
A.煤尘
B.有害气体
C.瓦斯
参考答案：C
A. Though he had been told B. Having been told C. Having told D. He had been told
下列哪项是目前我国卫生法规中所涉及的民事责任的主要承担方式
A．停止侵害B．排除妨碍C．消除危险D．恢复原状E．赔偿损失
