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【单选题】
—I hear Xiao Shenyang will come to Suqian. —Really? _______ he comes, I will be very happy because I'm a big fan of him. [ ]A.
If
B.
Until
C.
Unless
D.
After
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【简答题】瘀血致病的特点有哪些?
【单选题】I was born in New Orleans , Louisiana , a city ______ name will create a picture for beautiful trees and green grass in our mind .
A.
which
B.
of which
C.
that
D.
whose
【单选题】关于萃取精馏塔的下列描述中,那一个不正确( )
A.
a. 气液负荷不均，液相负荷大
B.
b. 回流比提高产品纯度提高
C.
c. 恒摩尔流不太适合
D.
d. 是蒸馏过程