调配油漆颜色时,电脑调漆可使颜色完全准确无色差。
参考答案:错
---We are informed that the Weifang International Kite Festival starts at 7:00.
---Oh, I didn't expect it was so early! I ________ to go out for dinner with my friends first.
A.was planning
B.am planning
C.have been planning
D.have planned
在 X.509标准中,数字证书一般不包含( )。
A.版本号
B.序列号
C.有效期
D.密钥