依据下列心电图(图7)应诊断为
()
A.一度房室传导阻滞
B.二度Ⅰ型房室传导阻滞
C.三度房室传导阻滞
D.心房扑动
E.二度Ⅱ型房室传导阻滞
参考答案:A
---It's very kind of you to see me off,Mr Johnson.
---______.It's the least we could do.
A.That's true
B.Not at all
C.I don't think so
D.Don't say to
在切除空载变压器时,变压器的空载电流越大,断路器的灭弧能力越强,则引起的过电压越严重。