智慧职教: 下面不属于电动车窗的组成是？ What is the composition of the underside that does not belong to the electric window?

检查机身下蒙皮是否有裂纹。 A: Examine the bottom skin panels of the fuselage for cracks. B: Inspect fuselage lowermost skin panels for cracks. C: Inspect fuselage underside skin panels for cracks.

中国大学MOOC: It is fun to turn over a big rock on the beach. Make sure you turn the rock back to the position it was in after you moved it. If you don’t turn it back over, all the sea animals under it or clinging tothe underside will die.The passage impliesthat rocks ________.