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【多选题】
对于高分子溶液说法正确的是( )A.
高分子溶液分为有限溶胀和无限溶胀
B.
无限溶胀过程常需要加热或搅拌
C.
制备高分子溶液时高分子化合物投入水中迅速搅拌
D.
配制高分子化合物溶液常先用冷水湿润和分散
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举一反三
【单选题】The first use of atomic weapons was in 1945, and their power_____ increasing enromously ever since.
A.
is
B.
was
C.
has been
D.
had been
【单选题】Nelson Mandela was still in jail when the first street was named【67】him. By the time he retired as President of South Africa, hundreds of streets, squares and schools【68】his name, as did many more pop...
A.
as
B.
for
C.
after
D.
in
【单选题】Cotton, like silk, was discovered and made【61】cloth by man before the historical period【62】. Its first recorded use was in India【63】cotton cloth of very fine texture, almost【64】 silk, was made. When t...
A.
into
B.
out of
C.
from
D.
through
【单选题】若设置字段的输入掩码为“####-######”，该字段正确的输入数据是（ ）。
A.
0755．123456
B.
0755．abcdef
C.
abed一123456
D.
####-######
【单选题】若设置字段的输入掩码为“####—######”，该字段正确的输入数据是（ ）。
A.
0755—123456
B.
0755—abcdef
C.
abcd—123456
D.
####—######
【单选题】The Bill of Right _____.
A.
defines the rights of Congress and the rights of the President
B.
guarantees citizens of the US specific individual rights and freedom
C.
is part of the Declaration of Independence
D.
has no relationship with the Constitution.
【单选题】During the year ended 30 September 20X4 Hyper Co entered into two lease transactions:On 1 October 20X3 a payment of $90,000, being the first of five equal annual payments of a lease for an item of pla...
A.
$98,000
B.
$68,000
C.
$97,000
D.
$101,000
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