测量电流互感器一次绕组对二次绕组及对地间的绝缘电阻时不可使用兆欧表（）
A.100V
B.500V
C.2500V
D.2000V
参考答案：A
Many people in our city _____ the old and the disabled. They offer their seats to them on buses or help
them cross the road.[ ]
A. care for
B. take care
C. agree with
D. take pride in
脚手架上门洞桁架下的两侧立杆应（）。
A、为双管立杆，副立杆应高出于门洞口1.2步
B、为单立杆
C、为双立杆，但副立杆只需搭设一步架高度
D、为双立杆，但副立杆不需要用扣件与主立杆连接
