企业中对人身有伤害或污染劳动环境的设备无法改造时，交罚款后可以允许继续使用.
参考答案：错
干气中的甲烷含量一般在90％以上。
The vocabulary and grammatical differences between British and American English are so trivial and few as hardly （）.
A．noticed
B．to be noticed
C．being noticed
D．to notice
