采掘工作面风流中瓦斯浓度达到l.5%时，必须停止工作，撤出人员，切断电源，进行处理。（）
参考答案：对
Hyperthyroidism is caused by increased levels of thyroxine in blood plasm
a. A client with this endocrine dysfunction would experienceA. heat intolerance and systolic hypertension.B. weight gain and heat intolerance.C. diastolic hypertension and widened pulse pressure.D. anorexia and hyperexcitability.
生产面包用水最好使用去离子水。
