题目内容

A）设置数据库恢复模式为简单模式 B）设置数据库恢复模式为完整模式
C）设置数据库恢复模式为大容量日志模式 D）使用SELECT INTO 语句加载数据

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From: Cindy West To: Jack Graham Subject: Survey Results Dear Mr. Graham, Between April 1st and June 30th, we phoned 2,000 TX computer users. We asked for their opinion about the products and services offered by your company. 1,150 agreed to share their views. 1,040 said that they were either satisfied or very satisfied with the product and service they received. Thats 90% of everyone who answered. I attached all the data in this email as well as a comprehensive analysis of the responses. Briefly, the results indicate that your customers value the speed and durability of TX computers. Many respondents mentioned that your computers still function perfectly even after several years of ownership. However, some people were not satisfied with the customer service or the delivery options that were offered. I hope you will find this information helpful. Id be happy to answer any questions you might have, so please dont hesitate to call. Sincerely, Cindy West Consumer Behavior. Analyst
What is the purpose of the e-mail？

A. To announce a discount on computers
B. To summarize a set of data
C. To promote a new type of a computer
D. To apologize for a late delivery

A工艺条件的试验及优化
B寿命试验(＞800小时)——稳定性
C非常规试验——破坏性条件试验(中毒试验、积碳烧碳试验、超温试验、钝化及再还原试验等)
D洗涤沉淀物

SET TALK OFF
S=0
I=1
INPUT "N=" TO N
DO WHILE S＜=N
S=S+I
I=I+1
ENDDO
？S
SET TALK ON
如果输入值为5，则最后S的显示值是()。

A. 1
B. 3
C. 5
D. 6

两种流体的对流传热膜系数分别为αl和α2，当α1＜＜α2时，欲提高传热系数，关键在于提高__________ 的值才有明显的效果。