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问题 单项选择题

某船舶交流三速变极式起货电动机其铭牌规定：额定转速为：1760/870/200rpm；额定功率为：38/19/4.4Kw。下述哪种说法是正确的？（）

A.一、二速为恒功率调速；二、三速为恒转矩调速

B.一、二速为恒转矩调速；二、三速为恒功率调速

C.一、二、三速均为恒转矩调速

D.一、二、三速均为恒功率调速

答案

参考答案：C

补全对话，情景问答

从Ⅱ栏中找出与Ⅰ栏相对应的答语。

                            Ⅰ                                          Ⅱ

( ) 1. Hello! What's your name?                  A. It's a violin.

( ) 2. Why do you like math?                      B. It's ten dollars.

( ) 3. How is your aunt?                              C. It's Monday.

( ) 4. What club do you want to join?          D. Yes, I do.

( ) 5. Do you want to go to a movie?           E. She is fine, thank you.

( ) 6. How much is the shirt?                       F. I want to join the music club.

( ) 7. Is this your pencil?                             G. My name is Cindy Smith.

( ) 8. Are you Mrs Miller?                          H. Because it's interesting.

( ) 9. What's this in English?                        I. Yes, it is.

( ) 10. What day is it today?                       J. Yes, I am.
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不定项选择

个股研究始于对行业内上市公司的初步筛选，选出具有研究价值的公司以建立备选股票池。这主要是对行业内上市公司财务指标的横向比较，以挑出行业内（）较好的公司。

A．高级管理人员

B．资产质量

C．内部控制

D．利润成长性
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