土壤电阻率大于1000~2000Ω·m,有避雷线的线路杆塔的工频接地电阻是()。
A.10Ω
B.15Ω
C.20Ω
D.25Ω
参考答案:D
在胸导联V1~V6都出现异常Q波或QS波称为()
A.后壁心肌梗死
B.前壁心肌梗死
C.广泛前壁心肌梗死
D.侧壁心肌梗死
E.下壁心肌梗死
I'm not sorry he's in prison.In my opinion he got what he _____. [ ]
A. preserved
B. deserted
C. deserved
D. reserved