皮皮学，免费搜题
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【单选题】
What does “to fit in with the corporate culture” mean?A.
wearing the right type of clothes
B.
try not to stand out in a negative way
C.
Integrating into the company
D.
doing exactly the same as other people do
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皮皮学刷刷变学霸
举一反三
【单选题】将分子量分别为 a ( 80 000 )、 b ( 35 000 )、 c ( 100 000 )的三种蛋白质混合溶液进行凝胶过滤层析,它们被洗脱下来的先后顺序是 _____________ 。
A.
abc
B.
bca
C.
cba
D.
cab
【单选题】It was so late that I didn't find a taxi after I walked past three _____________. [ ]
A.
blocks
B.
yards
C.
towns
D.
states
【简答题】步进电动机的驱动电源必须经过()放大器才能得到步进电动机所需的脉冲电流