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【简答题】
Write the formula between the number-average degree of polymerization,the extent of reaction and the molar ratio of the groups.
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举一反三
【单选题】Yesterday she sold her car, ______ she bought a month ago.
A.
whom
B.
where
C.
that
D.
which
【单选题】Yesterday she sold her car, ______ she bought a month ago.
A.
when
B.
where
C.
that
D.
which
【单选题】检定规程JJG596-1999《电子式电能表》适用于“利用电子元（器）件的特性测量交流有功电能量的电子式电能表”的检定。这些电能表包括（）电能表
A.
标准、感应式
B.
安装式、感应式
C.
标准、安装式
D.
安装式、无功
【多选题】三相电子式多功能电能表的测量内容有（）。
A.
能精确地测量正、反向有功；
B.
能精确地测量四象限无功电能；
C.
能精确地测量需量数据；
D.
能精确地测量失压计时等各种数据。
【单选题】She wanted the comfort of a large car and the low cost of a small one，so she bought a size in between the two______.
A.
for compromise
B.
as a compromise
C.
as compromise
D.
for a compromise
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