【简答题】She has given heart to him.
【单选题】NaOH滴定H3PO4以酚酞为指示剂,终点时生成()(H3PO4:Ka1=7.6×10-3, Ka2=6.3×10-8,Ka3=4.4×10-13)
【单选题】She has given heart to him.
【单选题】She has given heart to him.
【单选题】NaOH滴定H3PO4以酚酞为指示剂,终点时生成 ( )(H3PO4:Ka1=6.9×10-3,Ka2=6.2×10-8,Ka3=4.8×10-13)
【单选题】NaOH滴定H3PO4以酚酞为指示剂,终点时生成 ( )(H3PO4:Ka1=6.9×10-3 Ka2=6.2×10-8 Ka3=4.8×10-13 )
【简答题】Many words in English can be used both as nouns and as verbs. Complete all the sentences using either the noun form or the verb form of the words given in the box. Change the form where necessary . at...
【单选题】Like gender and race, one’s culture is more “basic”. So culture is _______.