By doing the "tank test", the engineers can find out() A: the amount of air in the plane B: the strength of the plane structure C: the pressure inside and outside the plane D: the power of the airplane engines

双面板放置元件的层面一般为（） A: TOP LAYER B: POWER PLANE C: GROUND PLANE D: BOTTOM LAYER

()层在PCB中没有电气意义? A: Top Layer B: Bottom Layer C: Power Plane D: TopOver Layer

下列层中，哪个在 PCB 中没有电气意义（ ） A: Topover Laye B: Bottom Laye C: Top Laye D: Power Plane

下列层中,哪个在 PCB 中没有电气意义(0.6) A: Power Plane B: Top Laye C: Bottom Laye D: Topover Laye

下列层中,哪个在PCB中没有电气意义: A: Power Plane B: Top Layer C: Bottom Layer D: Top Over Layer

Let's go to Paris _____________. A: by plane B: by a plane C: a plane D: by the plane

Altium Designer 软件操作中，下列层中，哪个在 PCB中没有电气意义？ A: Power Plane B: Top Layer C: Bottom Layer D: Topover Layer

“Board the plane” means _________. A: go out of the plane B: leave the plane C: enter the plane D: run away

“Board the plane” means _________ A: go out of the plane B: leave the plane C: enter the plane D: run away from the plane. E: C