long类整型常量书写表示时,要在数字后面加______或______。
在异步串行通信中,使用波特率来表示数据的传送速率,它是指【 】。
A--a registered trademark B--after-sale servicesC--certification system D--copyright piracyE--domestic products F--end productG--gross weight H--life of useI--owner of copyright J--pirated copyrightK--potent legislation L--processing requirementsM--product coverage N--transfer of technologyO--product quality guarantee P--unfinished products ( )认证体系 ( )半成品
We should prefer them (come) ______ next week.