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【单选题】
由于比例调节是依靠输入偏差来进行调节的，因此比例调节系统中必定()。A.
有静差
B.
无静差
C.
动态无静差
D.
不确定
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Please be ______ that if your price is ______ we will place order with you right away．
A.
ensured, accept
B.
assured, accepted
C.
assured, acceptable
D.
ensured, acceptable
【单选题】关于巨幼贫的实验室检查特点, 错误 的是
A.
骨髓红系明显增生
B.
中性粒细胞巨幼变
C.
可出现全血细胞减少
D.
可见 Howell-Jolly 小体
E.
MCV 下降
【简答题】Please be assured that should your prices be competitive, we will place our orders ______ you and open L/C ______ your favor ______ time．
【单选题】— Would you please tell me _____? — OK. It's a quiet and beautiful place. You can spend your weekend there. [ ]
A.
what is Dong Cultural Village like
B.
where Dong Cultural Village is
C.
what Dong Cultural Village is like
【简答题】Part B Write one colleague of yours a note to ask him to take your place, please. Suppose that you have to meet your friend, who has never been in Beijing before, at the Western Railway Station. But y...
【单选题】Please __________ your money in a safe (安全的) place. [ ]
A.
take
B.
trade
C.
keep
D.
bring
【简答题】血管壁的一般结构可分为
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