what 后面接形容词，再接不可数名词，speed为不可数名词，at high speed以高的速度，是固定表达，故选点评：感叹句是中学必须掌握的语法点。把握好三种形式：1. What+a/an+形容词+单数可数名词+(主语+谓语)！ 2. What+形容词+可数名词复数或不可数名词+(主语+谓语)！3.how用来修饰形容词、副词或...
The present invention relates to a method of converting the speed of a vehicle into electric power and to a principle of converting a resistance generated when driving a car into electric power to be used as power. ; In the past, speed and speed were considered to be unnecessary and ...
FAQ: How Do You Calculate the Speed of a Car Down an Inclined Driveway with Friction? What is work in terms of physics? In physics, work is defined as the product of the force applied to an object and the displacement of the object in the direction of the force....
speed is defined as the distance traveled divided by the time taken. Bodies that rotate, such as wheels, use a different quantity to define rate of rotation. This is often the number of revolutions carried out per minute. It is straightforward to convert between...
相关知识点: 试题来源: 解析 C。解析:时间等于路程除以速度,200÷50 = 4 小时。A 选项路程计算错误。B 选项路程计算错误。D 选项路程计算错误。本题考查行程问题,英语阅读技巧是理解关键词 constant speed、kilometers per hour 的含义。反馈 收藏
If the speed of a car is 60 kilometers per hour, how long will it take to travel 300 kilometers? A. 5 hours B. 6 hours C. 4 hours D. 3 hours 相关知识点: 试题来源: 解析 A。这是地理与物理中速度公式的应用。时间 = 路程÷速度,300÷60 = 5 小时。
If a car travels at a speed of 60 kilometers per hour for 3 hours, how far does it travel? A. 180 kilometers B. 120 kilometers C. 200 kilometers D. 90 kilometers 相关知识点: 试题来源: 解析 A。本题考查路程计算。路程 = 速度×时间,即 60×3 = 180 千米,答案是 A。运算技巧是...
A car travels at a speed of 60 kilometers per hour. How far will it travel in 3 hours? A. 120 kilometers B. 150 kilometers C. 180 kilometers D. 200 kilometers 相关知识点: 试题来源: 解析 C。速度乘以时间等于路程,60×3 = 180 千米。A 选项 120 千米错误;B 选项 150 千米不对;D ...
If a car travels at a speed of 60 kilometers per hour, how far will it travel in 3 hours? A. 180 kilometers B. 120 kilometers C. 240 kilometers D. 360 kilometers 相关知识点: 试题来源: 解析 A。解析:速度是每小时 60 千米,时间是 3 小时,路程等于速度乘以时间,即 60 乘以 3 等于 ...
If the average speed of a car is 45km/hr, how far can it travel in 40 minutes? A car travels 50 km h for 30 min, 40 km h for the next 15 min and then 60 km h for another 1 hour. Calculate the average speed of the car. A car for half of its time at...