滤油机、真空泵等设备现场操作人应经过哪些组织的专门培训?
参考答案:设备使用现场应确定操作负责人,操作负责人应经过施工单位、相关机构或设备制造厂的专门培训。
选择并改正下列句子中的错误。
( ) 1. Everyone want to go shopping. _____________
A B C D
( ) 2. Where does it hurts? _____________
( ) 3. Jenny puts a new film in she camera. _____________
( ) 4. It's about five hundred year old. _____________
( ) 5. May I help you taking a picture? _____________
晾晒衣服时,在阳光下干得快,这是因为温度越高,__________越快;冬季的霜,是空气中水蒸气发生__________而形成的。