除去杂抗体的吸附物应选用()
A.不含特异性抗原的抗原液
B.溶血素
C.含有补体的液体
D.葡萄球菌蛋白A
E.IgG
参考答案:A
Only with the greatest of luck _____to escape from the rising flood waters.
A.managed she
B.she managed
C.did she manage
D.she did manage
如图所示,线圈I与电源、开关、滑动变阻器相连,线圈Ⅱ与电流计G相连,线圈I与线圈Ⅱ绕在同一个铁芯上,在下列情况下,电流计G是否有示数?
(1)开关闭合瞬间;
(2)开关闭合稳定后;
(3)开关闭合稳定后,来回移动滑动变阻器滑动端;
(4)开关断开瞬间。