更多"Because noises modulate radio frequ"的相关试题:
[单项选择]Because noises modulate radiofrequency, radio stations use a band of frequencies to prevent interference with other stations.（）
A. govern
B. adapt
C. temper
D. renovate
[单项选择]At that moment when he was told that the radio station had found his son for him, it was all he could do ______.
A. cry
B. crying
C. to cry
D. cried
[单项选择]Because of its intimacy,radio is usually more that just a medium;it is_____.
A. firm
B. company
C. corporation
D. enterprise
[单项选择]Because of its intimacy, radio is usually more than just a medium; it is ______.
A. firm
B. company
C. corporation
D. enterprise
[单项选择]Radio reception wasn't very good because of a disturbance in the atmosphere; the announcer's voice sounded very _________.
A. disputed
B. disclosed
C. distorted
D. discarded
[单项选择]The British used radio waves because they______.
A. were more exact than sound waves
B. could not be detected
C. could penetrate fog and clouds
D. were easier to use than sound waves
[单项选择]Loud noises can be annoying.
A. hateful
B. painful
C. horrifying
D. irritating
[单项选择]Expected noises are usually more than unexpected ones of the like magnitude.
A. vulnerable
B. controllable
C. cozy
D. tolerable
