[填空题] 试验用的三倍频变压器，其阻抗压降（），磁通密度（），所以它的效率是很低的。

简述津液的主要功能。 Why are consumer-grade access points and routers not the best choice for SMBs?（） [" They are not designed for multi-access-point networks."," They do not scale well."," They have higher total cost of ownership than some enterprise products."," Their upgrade paths compete directly against Cisco upgrade paths."] 专家的伦理义务高于普通百姓。 根据《证券法》，股份有限公司申请股票上市，其股本总额不得少于人民币（） ["1000万元","3000万元","100000万元","40000万元"] The following Cisco Catalyst Series switches fit in the access area. Which switches also utilize StackWise technology to address the needs of companies with growing networks by allowing themto connect？（） [" Cisco Express Catalyst 500 Series switches"," Cisco Catalyst 2900 Series switches"," Cisco Catalyst 3560 switches"," Cisco Catalyst 3700 Series switches"," Cisco Catalyst 4500 Series switches"," Cisco Catalyst 6500 Series switche"] 试验用的三倍频变压器，其阻抗压降（），磁通密度（），所以它的效率是很低的。