【单选题】Noble metals include which of the following( )
B.
platinum,ruthenium,and osmium
C.
platinum,palladium,andmanganese
D.
copper,osmium,and iridium
【简答题】How many countries has Enya’s second album Watermark gone platinum?
【单选题】基础各部分的形状、大小、材料、构造、埋置深度及标号都能通过____反映出来。
【单选题】图(a)所示结构截面K的剪力影响线Q K 如图(b)所示,其中竖标1是:( )。