下载APP
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】（ 听力SectionC ）The people who lived in Rome two thousand years ago were already complaining about the noise in their city. They couldn’t sleep, they said, with all that traffic in the streets. For them...
A.
merely
B.
average
C.
worsening
D.
the degree of loudness
E.
we are exposed
【单选题】Do you know the difference between "sound" and "noise" "Noise" is an unwanted sound, such as (67) produced by airplanes, traffic, or industrial machinery... You may probably (68) people saying, "Ther...
A.
essentially
B.
particularly
C.
obviously
D.
similarly
【单选题】The decibel(分贝)is one tenth of a bel, ______ named after Alexander Graham Bell.
A.
a unit
B.
is a unit
C.
a unit is
D.
a unit being
【单选题】Noise Pollution Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior. Experiments have proved that in noisy situations (even temporary ones), people would ...
A.
can not complete his work in a noisy situation
B.
will suffer from complete deafness because of noise pollution
C.
can be psychologically affected by working in very noisy factories
D.
may cooperate well in a noisy surrounding
相关题目：
【单选题】分贝的定义是
A.
两个声强的比值
B.
两个声强的和
C.
散射量
D.
声波的速度
E.
两个声强之差
【多选题】（ 听力SectionC ）The people who lived in Rome two thousand years ago were already complaining about the noise in their city. They couldn’t sleep, they said, with all that traffic in the streets. For them...
A.
merely
B.
average
C.
worsening
D.
the degree of loudness
E.
we are exposed
【单选题】分贝用()代表。
A.
AB
B.
FB
C.
dB
D.
KB
【单选题】485WKM1MPG的噪音值（）分贝。
A.
35
B.
36
C.
37
D.
38
【单选题】用2.5MHZ.Φ20mm直探头探伤,•试求200mm处Φ5平底孔与30mm处Φ2平底孔的分贝差（）。
A.
15dB
B.
20dB
C.
23dB
D.
26dB
【单选题】分贝的定义是 。(x0是参考值)
A.
B.
C.
D.
【单选题】Do you know the difference between "sound" and "noise" "Noise" is an unwanted sound, such as (67) produced by airplanes, traffic, or industrial machinery... You may probably (68) people saying, "Ther...
A.
essentially
B.
particularly
C.
obviously
D.
similarly
【单选题】The decibel(分贝)is one tenth of a bel, ______ named after Alexander Graham Bell.
A.
a unit
B.
is a unit
C.
a unit is
D.
a unit being
【单选题】（ ）的单位是分贝。
A.
声强
B.
声调
C.
音色
D.
音调
【单选题】很静、几乎感觉不到的分贝是()
A.
70—90分贝
B.
60—70分贝
C.
40—60分贝
D.
20—40分贝
E.
0—20分贝
【单选题】Noise Pollution Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior. Experiments have proved that in noisy situations (even temporary ones), people would ...
A.
can not complete his work in a noisy situation
B.
will suffer from complete deafness because of noise pollution
C.
can be psychologically affected by working in very noisy factories
D.
may cooperate well in a noisy surrounding