百度试题 结果1 题目The speed of sound is commonly referred to as ___.相关知识点: 试题来源: 解析 答案:Mach 1 反馈 收藏
A. volume B. speed C. frequency D. intensity 相关知识点: 试题来源: 解析 C。解析:A high-frequency sound has a high pitch, while a low-frequency sound has a low pitch. 高频声音音调高,低频声音音调低,所以声音的音调由频率决定。反馈 收藏 ...
[translate] azune4.8.2345 zune4.8.2345[translate] aafter all,the speed of sound is independent of the motion of the source 在所有以后,声速是来源的行动的独立[translate]
The speed ___ is 340 meters per second.( )A.at that sound travelsB.with which sound travelsC.which sound travelsD.at which sound travels 答案 本题考查定语从句.根据题干“声音传播的速度是每秒340米”,“以……速度传播”at the speed of ,因此可知选D.故答案为:d 结果三 题目 The speed...
When performing an experiment on the speed of sound, the first thing to do is ___. A. measure the distance between the sound source and the receiver B. produce the sound C. set up the measuring device D. select a suitable medium 相关知识点: 试题...
Speed of soundAcoustic propertiesTissue structureCirrhotic liverMyocardial infarctionAcoustic properties of living tissues are important parameters for quantitative estimation of the tissue structure. It is very important to determine the relationship between the physical and the chemical change of tissue ...
The speed of sound in air is definite. But the speed of light in a vacuum is much ___. A. definite B. indefinite C. fast D. slow 相关知识点: 试题来源: 解析 C。“definite”在这里不是反义词的考查点。声音在空气中的速度是确定的,而光在真空中的速度比声音快很多。考查了对不同物理现象...
比较句必须遵守比较的对象性质的一致性。若选择前两项，则意为是speed of light 和sound比较，即光速和声音相比较。而C选项，用that指示代词代替前面所提及的speed，则意为speed of sound 声速，表达的意思就是光速比声速快得多得多。例如：The population of China is larger than that of Germany....
While the textbook states that sound travels faster in solids due to their higher density, it also mentions that sound can travel faster in air if the density decreases. This is because the speed of sound is directly proportional to the tension of the medium, not its density. This is ...
The speed of sound in a solid is usually ___ than in a gas or a liquid. A. slower B. faster C. the same D. not mentioned 相关知识点: 试题来源: 解析 B。原因:“The speed of sound in a solid is usually much faster than in a gas or a liquid.”。 反馈 收藏 ...