脱水药没有下列哪项特点()
A.易经肾小球滤过
B.不被肾小管重吸收
C.通过代谢变成有活性的物质
D.静脉注射可升高血浆渗透压
E.不易从血管渗入组织液中
参考答案:C
— Each of the students, working hard at their lessons, ________ the book.
— So have I. [ ]
A. is reading
B. has read
C. reading
D. reads
A.副线圈输出交流电的频率为10Hz
B.交流电压表的示数为20V
C.电阻R上消耗的电功率为2kW
D.原线圈中电流的最大值为100A