试件内磁感应强度一定时,特定位形的表面缺陷自身高度越大,漏磁场强度越小
参考答案:错
I could have called you for help, but I ____ your number.
A.couldn’t remember
B.didn’t remember
C.should have remembered
D.hadn’t remembered
脑梗死增强高峰为发病后()
A.2~3日
B.2~3周
C.1月
D.2个月
E.3~7日