除用于住宅和公用建筑以外，还广泛用于空间高大的厂房、场馆和对_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题多项选择题

除用于住宅和公用建筑以外，还广泛用于空间高大的厂房、场馆和对洁净度有特殊要求的场合的采暖系统是( )。

A．热水采暖系统

B．辐射采暖系统

C．蒸汽采暖系统

D．热风采暖系统

答案

参考答案：B

选择题

Children under sixteen are not permitted to see such kind of films as _____ bad for their mental

development. [ ]

A. was

B. were

C. is

D. are

问答题

请用不超过150字的篇幅，概括出给定资料所反映的主要问题。