【判断题】When the author was in her teens, she liked to wear school jacket.
【单选题】___ the safety of gas, the government has checked the city's gas supply system thoroughly. [ ]
【单选题】The trouble with resources as coal, oil and gas _____ that they are not renewable. [ ]
【多选题】圆锥碎矿机启动以前,对设备进行全面的仔细检查:()
D.
检查油箱中的油量、油温(冬季不低于20℃)情况等。
【简答题】The gas works _____ near the city. [ ] a. is b. are c. were d. be
【简答题】为什么高温干旱年份刺吸式口器类害虫发生严重?
【简答题】圆锥破碎机的(),就是利用装设在机架周围的弹簧作为保险装置。
【单选题】消费者一般缺乏专门的商品知识和市场 知识。消费者在购买商品时,往往容易受厂家、商家广告宣传、促销方式、商品包装和服务态度的影响。 这体现了消费者市场的()特点