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【判断题】
在煤气设备检修时动火分析不宜过早，一般不要早于动火前两小时，如果动火中断半小时以上应重新分析。A.
正确
B.
错误
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【简答题】Task 2 Simon is job hunting and is asking Ms. Wright for a reference (推荐信). Listen to the conversation and decide whether the following statements are true or false. Then write key words to suppor...
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