SATII (关于声波)A worker hits a metal pipe with a hammer.The ratio of the intensity of loudness as heard by people standing 100 meters away from the worker to the intensity as heard by people standing 200 meters away from the worker is A 4:1B 2:1
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SATII (关于声波)A worker hits a metal pipe with a hammer.The ratio of the intensity of loudness as heard by people standing 100 meters away from the worker to the intensity as heard by people standing 200 meters away from the worker is A 4:1B 2:1
翻译(a social worker)
worker
a worker in factory 还是a worker in a factory
看下面 I am a worker 对a worker提问
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Neither of them (be) a worker
a factory worker的复数是什么