空气弹簧装车前须进行了600kPa风压试验、保压()漏泄量不越过10kPa
A.5min
B.10min
C.15min
D.20min
参考答案:C
writing the article, Mrs. Curie even forgot her dinner.
A.Absorbed in
B.Absorbing at
C.Having absorbed by
D.To absorb in
计算机网络提供各种方便可靠的服务,其中包括()。
A、配置文件
B、网上电话
C、资源共享
D、资源独享