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[单选题]在SQL语句中,与表达式“仓库号NOT IN(“wh1”,“wh2”)”功能相同的表达式是A.仓库号=“wh1”AND仓库号=“wh2”B.仓库号!=“wh1”OR仓库号#“wh2”C.仓库号<>“wh1”OR仓库号!=“wh2”D.仓库号!=“wh1”AND仓库号!=“wh2”
[单选题]在SQL语句中,与表达式“仓库号NOT IN(“wh1”,“wh2”)”功能相同的表达式是A.仓库号=“wh1”AND仓库号:“wh2”B.仓库号!=“wh1”OR仓库号:=“wh2”C.仓库号<>“wh1”OR仓库号!=“wh2”D.仓库号!=“wh1”AND仓库号!=“wh2”
[问答题] 5WH法中的5WH各指何意?
[单选题]给出在仓库“WH1”或“WH2”工作,且年龄小于40岁的职工号和姓名,正确的命令是( )。
[单选题]有下列程序 main() { int t, a=1, b=5, c=-2; while(a>b>c) { t=a; a=b; b=t; c++;} printf("%d, %d, %d", a, b, c); } 程序输出的结果是( )。A.1, 5, 0B.1, 5, -2C.5, 1, -1D.5, 1, -2
[试题] People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of th
[单选题]Which of the following is NOT true?A.) When a person tries to help others, he must be clear that there is a real emergency.B.) When a person tries to help others, he should know whether they are worth his help.C.) A person must take the full responsi
[试题] People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of th