名词解释题撞击声impact sound

名词解释题
撞击声impact sound

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下列选项中属于ActionScript脚本语言中声音控制函数的有() A、Sound.attachSoundB、Sound.getPanC、Sound.getVolumeD、Sound.setPan

Nobody had predicted the scale of impact of ( ) communications and that it world be one of the largest businesses in the history of mankind with and immense impact on all economies.[1分]A.microwaveB.satelliteC.cellD.cellular

下列文件中,一般属于视频文件的是(A)sound.doc(B)sound.txt(C)sound.avi(D)sound.bmp

When a speech sound changes and becomes more like another sound that follows or precedes it, it is said to be______A.nasalizeD.B.voiceD.C.aspirateD.D.assimilateD.

Large pillars and corners may_____A.make sound rich and full.B.be cures for sound problems.C.be sources of sound problems.D.function as effectively as clouds.

Can you hear This?  When something creates a sound wave in a room or an auditorium, listeners hear the sound wave directly from the source. They also hear the reflections as the sound bounces off the walls, floor, and ceiling. These are called the reflected wave or reverberant(反射的)sound, which can be heard even after the sound is no longer coming from the source.  The reverberation time of an auditorium is determined by the volume or interior size of the auditorium. It is also determined by how well or how poorly the walls, ceiling, floor, and contents of the room (including the people) absorb sound. There is no ideal reverberation time. Because each use of an auditorium calls for different reverberation. Speech needs to be understood clearly: therefore rooms used for talking must have a short reverberation time. The full-sound performance of music such as Wagner operas or Mahler symphonies should have a long reverberation time. The light, rapid musical passages of Bach or Mozart need a reverberation time somewhere between.  Acoustic problems often are caused by poor auditorium design. Smooth, curved reflecting surfaces create large reflections. Parallel(平行的)walls reflect sound back and forth, creating a rapid, repetitive pulsing effect. Large pillars(柱)and corners can cause acoustic shadows as the sound waves try to pass around the object. Some of these problems can be solved by using absorbers and reflectors to change the reverberation time of a room. For example, hanging large reflectors, called clouds, over the performers will allow some sound frequencies to reflect and others to pass to achieve a pleasing mixture of sound.文章(41~45)This passage is mainly about_____A.sound waves and their effects.B.the types of music orchestras play.C.walls of an auditorium.D.the design of an auditorium.

A ( ) is not a sound, it is a collection of distinctive phonetic features. A.phoneme B.phone C.sound D.speech

水泵V带轮故障会有()。A、当当金属撞击声B、咣咣金属撞击声C、清脆嗒嗒声D、沉闷金属敲击声

正时齿轮配合间隙小,发出()。A、散乱撞击声B、尖脆嗒嗒声C、嗡嗡声D、规律撞击声

立即发警报。()A、Sound the bell immediately.B、Sound the alarm immediately.C、Ring the alarm immediately.D、Ring the bell immediately.

压缩机内有撞击声的原因?

以下属于音频文件的是()A、sounD.docB、sounD.txtC、sounD.bmpD、sounD.wav

A technician installs a new sound card but no sound can be heard. Which of the following utilities can be used to see an error?()A、MSCONFIGB、Device ManagerC、DXDIAGD、REGEDIT

You install a 16-Bit ISA sound card on your Windows 2000 Professional computer. You install the manufacturer’s device driver for the sound card. You then restart the computer. During the start up process, the computer stops loading and Windows 2000 Professional. You restart the computer, and again the computer stops loading Windows 2000 Professional computer.  You start the computer in Safe Mode. What should you do next?()A、Remove the sound card device driver by enabling driver signing.B、Remove the sound card device driver by disabling driver signing.C、Disable the sound card device driver by using the disable command.D、Disable the sound card device driver by using computer management.

单选题According to the last paragraph, it will be the most difficult for a person who has lost the hearing in one ear to tell ______.Awhere the source of a sound isBhow loud a sound isCwhen a sound starts to appearDwhat makes a sound

名词解释题撞击声压级改善量reduction of impact sound pressure level

名词解释题撞击声压级impact sound pressure level

名词解释题撞击声

单选题水泵V带轮故障会有()。A当当金属撞击声B咣咣金属撞击声C清脆嗒嗒声D沉闷金属敲击声

名词解释题消声sound attenuation;moise reduction sound deadening

单选题You are the administrator of Company’s network. You have disabled the integrated sound card on your Windows 2000 Professional computer by removing a hardware jumper and install a new PCI sound card. You restart the computer but the sound card does not function correctly. You use Device Manager to view the hardware settings on the computer as shown in the Device Manager window. (Click the Exhibit button.) You want the PCI sound card to function properly. What should you do? ()AUse System in Control Panel to uninstall the integrated sound card.BUse Device Manager to change the IRQ for the new sound card to a different setting from the disabled integrated sound card.CMove the sound card to a different PCI slot.DUninstall the integrated sound card and disable Plug and Play detection for the new device. EUse Device Manager to update the drivers for the new soundcard.

名词解释题撞击声压级

单选题A sailing vessel is overtaking a steam vessel in a fairway on International waters,so as to pass on the steam vessel’s port side. The sailing vessel is the().Aprivileged vessel and would sound two short blastsBburdened vessel and would sound two prolonged blasts followed by two short blastsCburdened vessel and would sound no whistle signalDprivileged vessel and would sound no whistle signal

单选题You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should().Ahold course and sound a two blast whistle signalBhold course and sound no whistle signalCchange course to the right and sound one blastDhold course and sound two prolonged and two short blasts

单选题The Title of the passage can be given asAHow to Install the Windows Sound System Microphone.BThe Windows Sound System Microphone.CComputer Hardware.

单选题The pilot of the plane which flies faster than sound travels does not hear the thunderclaps because______.Athe sound of plane engine travels slower than the planeBthe frequency of the sound altersCthe passage does not mention itDthe pressure decreased when the plane flies in the air

单选题Which of the following can serve as the best title of this passage?AThe Prefix Mach.BThe Speed of Sound.CThe Frequency of Sound.DThe Intensity of Sound.