Does "The printed circuit board industry defines heavy copper as layers exceeding three ounces of copper, or approximately 0.0042 inches (4.2 mils, 105 m) thick." contain the correct answer to "What's the minimum amount of copper a layer in a PCB can have to be considered "heavy copper"?"

A: yes

Does "Unlike IGFETs, the JFET gate forms a pn diode with the channel which lies between the source and drain." contain the correct answer to "What mode do both JFET and IGFET operate in?"

A: no

Does "In addition, both Home Theater Magazine and Ultimate AV have given the system's Blu-ray playback very favorable reviews, stating that the quality of playback exceeds that of many current standalone Blu-ray Disc players." contain the correct answer to "What PlayStation 3 feature did Home Theater Magazine most like about PS3?"

A:
yes