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________.........本题为计

A breeze hits the tree. 翻译(a social worker) SAT2物理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)4:1(B)2:1(C)1:1(D) 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 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________.........本题为计 a worker in factory 还是a worker in a factory 看下面 I am a worker 对a worker提问 Miss Liu is a worker.(对a worker提问) Bob's father is a worker.(对a worker提问) I'm a worker 特殊疑问句a worker 画线 一道SAT2物理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 work is A 4:1 B 2:1 C 1: Mr Chen is a worker. my brother is a worker对worker进行提问 I am worker 为什么要在worker前加a? 求翻译 a memery hits you right out of blue The worker put in a bag.改错 his father is a worker. 的问句 Neither of them (be) a worker