When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）. ["increase the amount of cooling water to the condenser","decrease the amount of cooling water to the condenser","add more refrigerant to the system","remove some refrigerant from the system"]
在PowerPoint 2000可以直接插入的内容有（）。 ["文字、图像","图形、艺术字","表格、图表","其他三项都可以"]
10KV客户用电业受理书受理主要内容不包括（） ["新装","减容、迁移","暂停、恢复暂停","增容"]
水下采油系统必须通过（）才能进行遥控操作，是水下采油系统的关键之一。 ["控制系统","油嘴","油管","生产闸门"]
以下不属于中小企业管理的基本原则的是（） ["A.统一授信","B.审贷分离","C.收益覆盖风险","D.情景分析"]
生长素是在植物的哪些部分合成的？生长素的合成有哪些途径？
