黄金租赁业务产品主要面向与贵金属的冶炼、加工、销售相关的企业法人，主要包括（） ["黄金生产企业（矿山企业）","首饰加工企业","黄金精炼企业","黄金经贸企业"]
Through a （） pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers. ["positive displacement","ejector","centrifugal","air compressor"]
简述六鞭毛虫病的防治方法。
简述六鞭毛虫病的流行情况。
If a diabetic suffers an insulin reaction and is conscious，he should be given（）. ["soda crackers and water","orange juice","an ounce of whiskey","a glass of milk"]
一座炭化室平均宽度为450mm，锥度为70mm的焦炉，混合煤气的总消耗量为42000m3/h。求：机、焦侧煤气流量？
