把质量相等的实心木球和实心铁球浸没于水中放手后，铁球下沉而木_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

把质量相等的实心木球和实心铁球浸没于水中放手后，铁球下沉而木球上浮，静止后二球所受浮力的大小关系是（　　）

A．F_木＞F_铁

B．F_木=F_铁

C．F_木＜F_铁

D．无法比较

答案

答案：A

选择题

—Where are the next magazines, Mum? I want to read them.

—They ____ in the drawer by your father, I think.

A．are put

B．are kept

C．were taken

D．were brought

单项选择题

宽带ISDN的核心技术是

A．ATM技术

B．光纤接入技术

C．多媒体技术

D．SDH技术