当语句w=IIf(4>10,”Red”,“Green”)执行后,变量w中的值是()。
A、Null
B、“Red”
C、“Green”
D、-1
参考答案:C
Fresh fruit and vegetables _______ long on hot summer days. [ ]
A. can't be kept
C. don't keep
C. won't be kept
D. are not kept
在变压器门型架构上和在离变压器主接地线小于( )的配电装置的架构或房顶上,在土壤电阻率大于( )时,不允许装设避雷器、避雷线。
A.10m,350Ω·m B.10m,500Ω·mC.15m,350Ω·m D.15m,500Ω·m