电缆导体的标准代号()
A、GB/T3956-1997
B、GB/T3048-2008
C、GB/T2952-2008
D、GB/T5023-2008
参考答案:A
Do you ____ a cat ____ a pet at home?[ ]
A. have , as
B. keep, for
C. keep, as
D. Both A and C
确保整个献血过程是使人感到()的过程。
A.安全,快速,简单
B.安全,高效,干净
C.安全,高效,愉快