在单电源放射性网络的接线中,继电器的测量阻抗与()到保护安装地点之间的阻抗成正比。
参考答案:短路点
能测出梅毒螺旋体特异抗体的试验是()。
A.荧光密螺旋体抗体吸收试验
B.捕获ELISA法
C.梅毒螺旋体制动试验
D.非密螺旋体抗原试验
E.梅毒螺旋体血凝试验
The weather yesterday was it is today. [ ]
A. not as wetter as
B. much wetter than
C. more wetter than
D. wetter as