Explain how to change miles per second to metres per second. An airplane is travelling at a speed of 489 m/s at an altitude where the speed of sound happens to be 307 m/s. What is the Mach number of the plane? An airplane traveling at one third the speed of sound (i.e., 114 ...
3【题文】Sound travels ___ air ___ a speed of about 340 metres per second.A.over; inB.through; atC.by; atD.through; over 4Sound travels ___ air ___ a speed of about 340 metres per second.A.over; inB.through; atC.by; atD.through; over 反馈 收藏 ...
小题5:We are told that sound ___ through air at a speed of about 340 metres per second. 答案 小题1:arrived小题2:will act小题3:was taking小题4:Have written小题5:travels 小题1:考查时态。根据was可知,用过去时,故填arrived。小题2:考查时态。句意“玛丽想知道她长大后会成为什么”。用...
为止。句意:声音在空气中的传播速度大约是每秒340米。结合语境可知前文是通过空气的速度,下文表示在数字上的一点,故前一空用through,后一空用at,选B。 考点:介词辨析 点评:英语介词的一个特点是一词多义,并且介词间语义交叉现象很多,习惯用法也很多,有时很难从词义上区分开来。故学习中要注意不断总结,熟记一些...
Answer to: The speed of sound is 1,088 feet per second. Convert the speed of sound to miles per hour. Round your answer to the nearest whole...
The jet plane is flying at the velocity of sound. 喷气机正在以音速飞行。 The current velocity of the flood stood at3.6 metres per second. 洪水流速为每秒三点六米。 A bullet goes from this gun with a velocity of3000 feet per second. 此枪发出的子弹,其速度为每秒3000英尺。 speed的中文...
5. Sound travels (travel) through air at a speed of about 340 metres per second. 相关知识点: 试题来源: 解析 答案见上考查一般现在时和主谓一致。句意:声速为每秒340米。真理要用一般现在时,且sound为不可数名词,动词要用三单形式。故答案为travels。
16.Soundtravels (travel) through air at a speed of about 340metres per second. 试题答案 在线课程 分析声音在空气中的传播速度是大约每秒340米. 解答答案:travels.声音在空气中的传播,这是一个自然现象,所以要用一般现在时.根据主语是sound,结合英语提示travel,所以要用travels.故填travels. ...
为止。句意:声音在空气中的传播速度大约是每秒340米。结合语境可知前文是通过空气的速度,下文表示在数字上的一点,故前一空用through,后一空用at,选B。考点:介词辨析点评:英语介词的一个特点是一词多义,并且介词间语义交叉现象很多,习惯用法也很多,有时很难从词义上区分开来。故学习中要注意不断总结,熟记一些介词...
Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!