【单选题】按建筑的规模和数量不同,建筑可分为( )。
【简答题】滚动轴承的密封形式可分为()和()两种。
【单选题】What has the Dutch designer designed?
A.
A large tower that can purify air.
B.
A magic pocket that can create clean air.
C.
A most livable city that is smog-free.
D.
A device to measure the pollution level.
【简答题】滚动轴承的密封形式可分为()和()两种。
【简答题】What has the Dutch government confirmed?
【单选题】开局阶段的具体目标是建立在轻松,( )气氛的基础上。