高频RFID卡的作用距离()。
A、小于10cm
B、1~20cm
C、3~8m
D、大于10m
参考答案:B
—Which of these two English books will you borrow?
—I’ll borrow ____________ of them because they are very interesting.
A.either
B.all
C.neither
D.both.
生产乳制品的原料及半成品在仓库堆放时,货品与墙壁间的距离为()
A.10m以上
B.20m以上
C.30m以上
D.50m以上