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【单选题】
关于制动能量回馈,说法正确的是A.
制动能量回馈时,电机反转发电
B.
制动能量回馈时,电机转子的转速大于定子磁场转速
C.
制动能量回馈只有在制动时
D.
制动能量回馈的比例是固定约为20%
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反馈参考答案：
举一反三
【单选题】以下关于确认测试的叙述中,不正确的是()
A.
确认测试的任务是验证软件的功能和性能是否与用户要求一致
B.
确认测试一般由开发方进行
C.
确认测试需要进行有效性测试
D.
确认测试需要进行软件配置复查
【单选题】从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近并能代替的那一项。 —Do you often take exercise every day? —Yeah, I want to be a sport player. Doing that can build me up . [ ]
A.
cheer me up
B.
make me stronger
C.
keep me active
D.
change me more
【简答题】My cousin first met his future wife Ruth in very unusual circumstances they were both trying to get into the same taxi. I often think the whole thing was quite __________ . (填写画线词的近义词)
【简答题】听句子，选出与你所听到句子的意义最接近的选项。 ( )1. A. She runs faster than Paul. B. She runs as faster as Paul. C. Paul runs faster than her. ( )2. A. My mother and I often go shopping. B. My mother and I often go...
【简答题】听录音，选出你所听到的句子的同义句或近义句。 ( ) 1. A. What is Mrs. Zhang doing? ( ) 2. A. Which season do you like best? ( ) 3. A. It's time for bed. ( ) 4. A. I often go to school on foot. ( ) 5. A. H...
【单选题】In a knowledge economy, our strength comes from the power of our ideas. A leisure life , a stray(走神的)thought, and a random memory can combine in novel ways to produce creative ideas.(选出划线词的近义词)
A.
a long story
B.
fiction
C.
new, interesting and often seeming slightly strange
D.
disgusting
【简答题】在括号里填写画线词的近义词,使得句意完整,句法结构正确: My cousin first met his future wife Ruth in very unusual circumstances they were both trying to get into the same taxi. I often think the whole thing was quite __________ ...
【单选题】在下面关于回归测试的叙述中,正确的是 。
A.
回归测试只能在系统测试这个级别进行，不能用于单元测试和集成测试
B.
回归测试都是自动化执行的
C.
回归测试必须重新测试整个系统
D.
回归测试是对被测过的程序实体在修改缺陷或变更后进行的重复测试，以此来确认在这些变更后是否有新的缺陷引入系统
【单选题】以下关于测试的叙述中,不正确的是
A.
应该在代码编写完后开始测试
B.
软件中错误暴露的越迟，则修复和改正错误所花费的代价就越高
C.
应该尽可能早的进行测试
D.
项目需求分析和设计阶段需要测试人员参与
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