感应式电能表工频耐压试验电压应在()内,由零升至规定值并保持1min。
A.5~10s
B.0~10s
C.30s
D.10~20s
参考答案:A
The CASS said the scores were based on corporate responsibility and financial reports,. But some people raised__________ about whether the information was reliable.
A.problems
B.doubts
C.hands
D.heads
按计划标准衡量所取得的结果,纠正发生的偏差,最终实现工程项目目标的管理过程称作( )。
A.执行
B.检查
C.控制
D.调查