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【多选题】
Read the following passage and fill in the blanks with the given words. 阅读下面的文章,在空白处填上合适的词汇。A.
disagree
B.
computers
C.
able
D.
housework
E.
pollution What kind of life will we live in the future? I think we won ’ t use paper to write on. We can study on 1 . And there won ’ t be many cars and much 2 .People will even have robots in their homes. They can help do the 3 .People will be 4 to travel to other plants for holidays. Maybe people will live on a space station one day. However, some people 5 on this. They think it is not safe for people to live on other planets.
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【单选题】用一组数据"产品型号、生产车间、生产日期、生产数量"来描述生产信息，其中"产品型号"和"生产数量"的数据类型可定义为（）
A.
文本型和数字型
B.
货币型和数字型
C.
数字型和是否型
D.
是否型和日期/时间型
【多选题】最常用的数字信号波形为矩形脉冲,矩形脉冲易于产生和变换,常见的数字基带信号码型包括( )。
A.
单极性矩形脉冲(NRZ码)
B.
双极性矩形脉冲
C.
单极性归零码
D.
曼彻斯特码
E.
PN码
F.
M序列
【简答题】简述母乳喂养的优点有哪些?