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问题 单项选择题

对于报警的分级，下列说法正确的是（）。

A、系统报警都是紧急报警

B、报警的分级应根据实际需要进行设定

C、系统报警与生产无关，都应设置为低级别报警

D、工艺报警都是紧急报警

答案

参考答案：B

计算题

在如图所示的电路中，R为电阻箱，电表均为理想表，K1为单刀单掷开关，K2为单刀双掷开关。当K1打开，K2接a，调电阻箱使R1=14Ω，此时电流表示数I="0.2A" ；当K1闭合，K2接b，调电阻箱使R2=9Ω，此时电压表示数U=2.7V。则电源电动势和内阻分别为多少？
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填空题

Part 1


Question 46-50


Here is a letter from Colorado State University to inform the applicant Mr. Li that he has been admitted to Cognitive Psychology Program beginning with the fall semester of 2000.
Dear Mr. Li,
Thank you for your interest in graduate study at Colorado State University. You have been admitted to our Cognitive Psychology Program beginning with the fall semester of 2007.
The enclosed brochure provides a derailed description of the Cognitive Psychology Program, including, the program of study, degree requirements, mentorship program, faculty research interests and laboratory facilities.
We hope you will join us this fall. Your undergraduate record, interests and experience indicate that you will gain much new and exciting knowledge at CSU. Please notify me in writing of your decision to accept or reject this offer, prior to April 15. If you have any questions, feel free to contact me at 555-555-5555.
Sincerely,
Hugh Camera
☆ Read the letter and complete the given information form.
☆ Write a word, phrase or number in the spaces 1-5.
☆ The extra expenses arising from transportation will be borne by your side.
☆ Please pay special attention to the packing for the long sea voyage.

A Letter From Colorado State University


Mr. Li has been admitted to (1)______ of Colorado State University
Mr. Li will begin with (2) ______of year 2007.
Mr. Li receives the brochure providing (3) ______
Mr. Li is required notify CSU of his (4) ______before (5) ______
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