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【单选题】
Nathan likes his job because he enjoy the beauty of nature.A.
can
B.
must
C.
should
D.
is supposed to
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【单选题】Mike has got used ___ up late at night. (stay up)
A.
to stay
B.
不填
C.
to staying
D.
staying
【单选题】Mike has a debt ______ his friends because he got the money from them to start his business.
A.
to
B.
from
C.
with
【简答题】以银电极为指示电极,双液接饱和甘汞电极为参比电极,用 0.1000 mol/L AgNO 3 标准溶液滴定含 Cl - 试液,得到的原始数据如下 ( 电位突越时的部分数据 ) 。用二阶导数法求出滴定终点时消耗的 AgNO 3 标准溶液体积。 滴加体积 电位 E/V △ E △ V ∆ 2 E/∆V 2 24.10 0.183 24.20 0.194 24.30 0.233 24.40 0.316 ...
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