【简答题】Fill in the blanks.(填空)
【单选题】The musical comedy Oklahoma! did much to expand the potential of the musical stage, and it encouraged others to attempt ______
C.
that were original themes
【单选题】Tour the Forbidden City where emperors have lived for more than 500 years and see the Ming Tomb burial grounds for the 13 emperors. 上面这句话描述的是哪两个旅游景点.
【单选题】由16个C类网络组成一个超网,其网络掩码(mask)应为 (55) 。
【简答题】Fill in the letter(s) for the word ( 为单词填字母 ) : fill in the ___ppl___c___tion form
【多选题】在滴定反应K 2 Cr 2 O 7 +6FeSO 4 +7H 2 SO 4 ==3Fe 2 (SO 4 ) 3 +Cr 2 (SO 4 ) 3 +K 2 SO 4 +7H 2 O达到化学计量点时,下列说法中正确的是( )。
A.
溶液中Fe 2 (SO 4 ) 3 与Cr 2 (SO 4 ) 3 的浓度(mol/L)之比为3:1
B.
溶液中Fe 2 (SO 4 ) 3 与Cr 2 (SO 4 ) 3 的浓度(mol/L)相等
C.
液中两个电对Fe 3+ /Fe 2+ 和Cr 2 O 7 2- /Cr 3+ 的电位相等
D.
溶液中两个电对Fe 3+ /Fe 2+ 和Cr 2 O 7 2- /Cr 3+ 的电位不相等
【单选题】●由16 个 C类网络组成一个超网(supernet) ,其网络掩码(mask)应为 (55) 。 (55)