烟道式燃气热水器不能安装在浴室内，应安装在通风情况良好的房间内
正确
暂无解析
开展国际经济合作的基本原则是()
设A、B为同阶方阵，且r(A)=r(B)，则()
Theboyboughtanewdictionary__________heturnedforhelp.
Generally,theweatherinBritainis_____toocoldinwinter_____toohotinsummer.
Ourteacher__________ustopractiseourspokenEnglishasoftenaspossible.