【简答题】建立Plikers班级花名册时,班级人数上限为?
【单选题】10mol/LNa2CO3溶液的pH值为( )。(Ka1=4.2×10-7,Ka2=5.6×10-11)
【单选题】Why is there so much hype these days?
【多选题】What is the meaning of “hype’?
【单选题】Which is not the meaning of hype?
【单选题】The underlined word 'hype'(Para 1, Line 3)may be closest to______.