山西焦煤的生产理念是“把握市场，掌握主动；效率优先，效益最大”。
参考答案：对
句型转换。
1. your, birthday, brother's, when, is (连词成句) ?
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2. birthday, Dave's, fifth, July, is (连词成句) .
3. Joe likes Art Festival best. (改为一般疑问句)
4. What's your age? (改为同义句)
5. They have a school trip every year. (改为一般疑问句)
生产环境洁净度不够高
A．干热空气灭菌B．流通蒸气灭菌C．热压灭菌D．紫外线灭菌E．滤过除菌
