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【简答题】
回转体一般要标注()向和()向两个方向的尺寸
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皮皮学刷刷变学霸
举一反三
【简答题】在超声波检测中，由于波的干涉，使超声源附近出现很多声压( )点。
【单选题】The design of the Sydney Opera House has been taken as a myth because ______.
A.
it was the workpiece of the famous architect
B.
it met most of the rules for architectural design at that time
C.
the design project suggested by Utzon was unbuildable
D.
it was designed by an unknown architect and was thought unbuildable at that time