氢氯噻嗪的利尿作用特点是：（） ["利尿作用强，尿中排出钠、钾、氯和碳酸根离子增多","利尿作用强，尿中排出钠、钾、氯离子增多","利尿作用中等，尿中排出钠、钾、氯离子增多","利尿作用中等，尿中排出钠、钾、氯和碳酸根离子增多","利尿作用弱，尿中排出钠、氯离子增多"]
A customer wants to purchase an IBM System Storage DS8700 to support a high-performance database environment. Which technical solution gives the customer the best relationship between I/O performance at the machine’s backend vs. capacity installed in the machine（） ["additional installation of the first and second expansion frame will increase the backend performance capability","the usage of 300 GB\/15k FC disks will give the server a high-performance backend capability","performance Accelerator restricts the number of disks connected to one device adapter pair to 32 disks","the second RIO-G loop between the base frame and the first expansion increases the backend performance"]
YSP4.7型钢瓶，允许最大充装重量为（）㎏。 ["4.7；","1.9；","2.0；","2.5"]
请简述Switch变流系统中,变流器发电机侧空开闭合测试步骤
某用户希望增加一个备份存储池在现有的DS5000存储系统上，那种磁盘提供了最好的选择：（） ["SATA","SAS","Fibre Channel","SCSI"]
食品中的植物性毒素主要有哪些？
