【单选题】下列哪种砖是以黏土、页岩、煤矸石为主要原料,经过制坯成型、干燥、焙烧而成的一种具有多排小孔的制品。()
【单选题】下列哪种砖是以黏土、页岩、煤矸石为主要原料,经过制坯成型、干燥、培烧而成的一种具有多排小孔的制品。()
【单选题】Most of the artists ___________ to the party were from South Africa.
【简答题】Most of the artists ______ to the party were from South Africa. A.to be invited B.invited C.being invited D.had been invited
【单选题】Most of the artists ______ to the party were from China. [ ]
【单选题】图表示了:家庭电路中四种用电器正常工作40小时的耗电情况.则( )