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【单选题】
直流电力拖动控制系统和交流电力拖动控制系统比较，（ ）流电力拖动控制系统的数学模型简单；（ ）流电力拖动控制系统调节器的设计简单。A.
直、直
B.
直、交
C.
交、直
D.
交、交
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【单选题】Don‘t call me at the office _______ it’s absolutely necessary。
A.
except
B.
unless
C.
since
D.
if
【单选题】It's absolutely ______ for us to reduce our price to your level, because Raw material prices have risen.
A.
out of the question
B.
out of question
C.
in question
D.
in the question
【简答题】A．The U.S. top officials are absolutely responsible for the conspiracy. B．People in no places other than U.S. enjoy democracy fully and freely. C．President Bush should rise to the trial conducted by t...
【单选题】—Johnson，come and look at the sea！It's beautiful，isn't it? —Absolutely！If only I ______here by the sea.
A.
had lived
B.
lived
C.
live
D.
will live
【简答题】情景对话。 Husband: Hi, darling, I'm home. Wife: 1 Husband: Well, just as usual. Wife: Come on, I've known you for years.Your face tells me something has happened. Husband: Is that so? Wife: 2 .Tell me, wh...
【简答题】A. 一般客户 B. 新客户 C. 潜在客户 D. 关键客户
【单选题】按客户重要性分类，客户可以分为()
A.
潜在客户、新客户、常客户、老客户、忠诚客户
B.
贵宾型客户、重要型客户、普通型客户
C.
基本型、被动型、负责型、能动型、伙伴型
D.
铅质客户、铁质客户、黄金客户、白金客户
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