第1題
[A] It's a unit for measuring the intensity of sound.
[B] It's the pressure of radiating waves.
[C] It's the frequency of radiating waves.
[D] It's the speed of sound.
第2題
A.the unit for measuring the4ntensity of sound.
B.the pressure of radiating waves.
C.the frequency of radiating waves.
D.the speed of sound.
第3題
A.Temperature
B.Relative humidity
C.Dew point
D.Atmospheric pressure
第4題
A、theoretical weigh
B、conditioned weight
C、settled by buyers and sellers
D、dry net weight
第5題
第6題
第7題
A、pneumograph
B、spirograph
C、spirometer
D、spirometry
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