试题来源: 解析 B。解析:“Speed Limit 30”表示速度限制为30(英里每小时或者相关单位),意味着你的速度不应该超过30,A选项可以任意速度行驶错误;C选项必须精确地开到30英里每小时太绝对;D选项可以超过30英里每小时不符合这个标志的含义,所以B正确。反馈 收藏 ...
EXACTLY WHAT IS SPEED AND WHAT DOES IT MEAN?Vince Grippi
A sign shows a speed limit of 30 km/h. What does it mean? A. You can drive at any speed. B. The maximum speed is 30 km/h. C. The minimum speed is 30 km/h. D. You must stop. 相关知识点: 试题来源: 解析 B。本题关于交通限速标志的含义。选项 A 可以任意速度行驶,不符合限...
People often use the words speed and velocity interchangeably, but they don't mean the same thing. Velocity is a vector quantity, which means it has a directional component, whereas speed is a scalar quantity which does not take direction into account. To see why direction is important, consi...
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百度试题 结果1 题目What does "China Speed" mean to our country? A It means that no trains will be faster than the Chinese trains today. C It means China is developing very quickly in many areas nowadays. B It means that China has become the strongest country in the world. D It...
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解析:第二段中的Speed makes a difference是什么意思?[A]紧急行动能帮助人们将心脏病和其他疾病区分开。[B]心脏病发作时,速度能有助于拯救病人的生命。[C]医生应当迅速做出正确的诊断。[D]病人应以不同的速度赶往医院。文章第二段指出,速度非常重要。研究报告显示,那些心脏病发作时不感到胸口痛的病人去医院的时...
Additional Resources The definition of a Marketing Qualified Lead (and what it’s not) Read Now The definition of vanity metrics and how to identify them Read Now
Then there are the other meanings offastthat have nothing to do with speed.Fastcan be used as an adverb in the sense of “holding tightly,” likea boat held fast to the dock.Fastcan also mean “soundly,” as insomeone who is fast asleep. These uses are closely related tosteadfast,anot...