A.held
B.hooked
C.hidden
D.hung
[单选题]A lamp was [suspended]from the ceiling.A.heldB.hookedC.hiddenD.hung
[单选题,A1型题] A hollow-cathode lamp is()A . A broad-band light sourceB . A narrow-band light sourceC . A light detectorD . Not a light source
[主观题]最高限价(Price ceiling)
[名词解释] 最高限价(Price ceiling)
[单选题]Judgment was suspended till the following Monday because of the lack of evi
[单选题]It was well known that Thomas Edison ____________ theelectric lamp.A.discov
[单选题]It was well known that Thomas Edison _____ the electric lamp.A.discoveredB.
[单选题]It was well known that Thomas Edison _____ the electric lamp.A.discoveredB.
[单选题]It was well known that Thomas Edison __________the electric lamp.A.discover
[名词解释] ceiling effect(天花板效应)