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问答题
We will punish those ______ cut corners during school building construction and will have zero tolerance for corruption and shoddy school projects.
A.what B.whom C.which D.who
A.
B.what
C.whom
D.which
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单项选择题
某组分在色谱柱中分配到固定相中物质的量为n
s
(mol),分配到流动相中物质的量为n
m
(mol),在固定相和流动相中的浓度分别为c
s
(mol·mL
-1
)和c
m
(mol·mL
-1
),则此组分的分配系数为______。
A.n
s
/n
m
B.n
m
/n
s
C.c
s
/c
m
D.c
m
/c
s
A.n
s
/n
m
B.n
m
/n
s
C.c
s
/c
m
D.c
m
/c
s
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问答题
Luckily, we'd brought a road map without ______ we would have lost our way.
A.he B.this C.who D.which
A.
B.he
C.this
D.who
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