Web应用软件的性能测试主要包括 ______。
A.并发测试
B.负载测试和压力测试
C.配置测试和性能调优
D.以上全部
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采集24小时痰标本时从()
A.晚7时至次晚7时
B.晨7时至次晨7时
C.晚8时至次晚8时
D.晨8时至次晨8时
阅读下面短文,根据短文内容完成表格中所缺信息,每空一词。(共10小题,每小题1分,计10分) March 25 is the 17th National Day of Education on the Safety of Elementary and Middle School Students. The theme of the day this year is to give students more knowledge about how to keep safe. How can you keep yourselves safe? Here are some suggestions. When there is a fire: Shout out “Fire”! Call 119! Try to find a safe exit and get away quickly. Don’t use a lift. Use a piece of cloth to cover your mouth and nose. When there is an earthquake at school: Stay calm. Follow the teachers’ instructions. Quickly move under the desk. Don’t jump out of windows or run out. When you are on the street: Wait for the green traffic light. Look left and right before crossing the street. Don’t run across the street. When you are eating: Wash fruits and vegetables carefully before eating them. Check the expiration dates(保质期) of the food. Don’t eat the food if it looks or smells bad. When you are at school: Take care not to fall down or hurt yourself. Don’t run, jump or push while going upstairs or downstairs. Take care of yourself all the time.
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从地面将一球以初速
农、工、商、综合类客户AAA+级信用等级的限制性条件包括()。
A.资产负债率≤50%
B.利息和到期信用偿还记录为满分
C.经营性现金净流量或现金净流量>0
D.经营性现金净流量>0
下列()不属于周转材料管理的内容。
A.周转材料计划制定
B.周转材料的使用
C.材料的维修和养护
D.周转材料的改进制作