在下面列出的几种语言中,( )是关系数据库的标准语言。
A.SQL
B.C
C.FoxPro
D.C++
参考答案:A
--- Why don't you try to do exercise to lose weight?
--- I have tried everything but it has made little ______.
A.effect
B.result
C.difference
D.conclusion
仅为供生产参考的抽检指标有()。
A、M10、M40
B、Vdaf、Mt、焦末含量
C、硫分St,d、灰分Ad
D、CRI、CSR