对膳食纤维生理功能的描迷,错误的是()
A.改善肠道功能
B.预防恶性肿瘤
C.减肥
D.预防缺铁
参考答案:D
下列变化属于物理变化的是
A.工业炼铁
B.榨鲜果汁
C.煤炭燃烧
D.炸药爆破
An IP ______ is a unique number the computer uses to identify itself, and to be identified over a network.
A.address
B.device
C.point
D.data