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【多选题】
下列属于高分子化合物特性的是( )A.
尔现象
B.
电泳现象
C.
稳定性大
D.
沉
E.
黏度大
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【简答题】I love deejay’s creativity, and what I can do with a machine, two turntables and a mixer.
【单选题】______ I saw the machine, I could not have imagined how efficiently it works.
A.
But for
B.
Because
C.
But that
D.
If
【单选题】--------Have you asked somebody to repair the machine? --------Oh, sorry, I forgot it. I _________for an engineer at once.
A.
am going to send
B.
would send
C.
have sent
D.
will send
【单选题】I developed very slowly and it took nearly two hundred years I was built as an ytical machine by Charles Babbage.
A.
before
B.
after
C.
long
D.
short
【单选题】The washing machine ___ last Wednesday works well.
A.
I bought
B.
I bought it
C.
which I buy
D.
that I bought it
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