串行口通信的速率称为波特率,其单位是()。
A.字符/秒
B.位/秒
C.帧/秒
D.帧/分
参考答案:B
根据所给汉语和首字母提示完成句子
1. Ann t_________(与……相像) her sister, so people often make mistakes.
2. Jim is s __________ (相像的) to his brother.
3. Extra paper will be h__________ (分发) to the students who need it during the examination.
4. The s ________(策略) that he came up with worked out well.
5. There are many w _________ (站点) on the Internet.
化验室常用试剂中,一级品用符号()表示。
A、GR
B、AR
C、SP
D、CP