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【单选题】
在液相色谱法中,梯度洗脱适用于分离 ( ) 。 (1) ; (2) ; (3) ; (4)A.
异构体
B.
沸点相近，官能团相同的化合物
C.
极性范围宽的样品
D.
沸点相差大的样品
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反馈参考答案：
举一反三
【单选题】Repaint the draft figures, plimsoll marks, ship’s name and port of registry （）.
A.
with red lead paint
B.
in red and white paint
C.
in original color
D.
all of the above
【单选题】“祝你好运”用英语怎么表达?
A.
Wish you a good luck!
B.
Wish you a bright future!
C.
Wish you a pleasant journey!
【单选题】What does "name of figures "in the first paragraph mean?
A.
Famous people or celebrities.
B.
Banking account.
C.
Family name.
D.
Cashier.
【简答题】Task 7 P 21 Name the figures of Speech used in each of the following sentences
【简答题】Directions: First, choose one of Chinese mythical figures ( not any of 8 mythical figures mentioned in the lead-in part ). And then write a brief description of it in a few English sentences without r...
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