合闸控制回路中,为什么要用TBJ两对常用接点并联?
参考答案:用TBJ两对常闭接点并联是为了防止一对接点接触不良或接点引线断线,开关合闸时合不上。
---How did you find the book?
---.Great, and also the book review says Shakespeare ________ all his characters in the play vivid and alive.
A.made
B.makes
C.had made
D.has made
四岁患儿,明显水肿,血压90/60mmHg,尿蛋白+++,尿红细胞0~2/HP,血浆白蛋白22g/L。
如果此患儿有持续性氮质血症,可能的诊断是()
A.慢性肾炎
B.IgA肾病
C.单纯型肾炎
D.肾炎型肾病
E.膜性肾病