计算(-2x2)3的结果是[ ]
A.-8x6
B.-6x6
C.-8x5
D.-6x5
答案:A
依次执行以下命令后的输出结果是______。SET DATE TO YMD SET CENTURY ONSET CENTURY TO 19 ROLLOVER 10SET MARK TO "."CTOD("49-05-01")
A.49.05.01
B.1949.05.01
C.2049.05.01
D.出错
小城市水源的选择规划中,应设( )个以上取水口。
A.1
B.2
C.3
D.4