皮皮学，免费搜题
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【单选题】
一般能力的核心成分是A.
观察能力
B.
记忆能力
C.
创造能力
D.
抽象概括能力
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皮皮学刷刷变学霸
举一反三
【单选题】NaOH 滴定 H3PO4 以酚酞为指示剂,终点时生成( )。(已知 H3PO4 的各级离解常数:Ka1=6.9×10^-3,Ka2=6.2×10^-8,Ka3=4.8×10^-13)
A.
NaH2PO4
B.
Na2HPO4
C.
Na3PO4
D.
NaH2PO4+Na2HPO4
【简答题】已知H 3 PO 4 的 。H 3 PO 4 的共轭碱为______，其 值为______。
【单选题】What resulted from the crash?
A.
50 passengers were killed.
B.
The flight from Newark to Buffalo was canceled.
C.
Some flights to the Buffalo airport were delayed.
D.
12 houses near the crash site were ruined by fire.
【单选题】If you collide with something, do you (a) crash into it, or (b) agree with it?
A.
crash into it
B.
agree with it
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