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【单选题】
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百度
B.
谷歌
C.
新浪
D.
搜狗
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举一反三
【单选题】She is very careful. She ______ very few mistakes in her work.
A.
does
B.
rakes
C.
makes
D.
gets
【单选题】She is very careful. She______very few mistakes in her work.
A.
does
B.
takes
C.
makes
D.
gets
【简答题】简述盾构法的主要优点。
【单选题】She is very careful. How ____ she ____ such a mistake the day before yesterday?
A.
could, have made
B.
should, have made
C.
could, has made
D.
can, made
【单选题】She is very careful, _________________she never makes mistakes.
A.
and
B.
but
C.
or
D.
so
【单选题】She is very careful. She ______ very few mistakes in her work.
A.
does
B.
makes
C.
takes
D.
gets
【简答题】简述盾构法的主要优点
【多选题】下面关于调节器参数的工程整定方法的应用条件哪些是正确的?()
A.
响应曲线法适用于广义对象模型为带有纯滞后的一阶惯性环节
B.
临界比例度法要求被控变量允许等幅振荡，且对象为高阶或有纯滞后
C.
衰减曲线法对于过渡过程比较快的系统，衰减比和振荡周期难以准确检测
D.
临界比例度法适用于比例度特别小的过程
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