魟

工 = 二 + 丨 : Mnemonic symbol: a steel beam, since 工 looks like the cross section of a steel beam. In front of the engine ((e)ng1), Gitta Giraffe (gu) is doing some hard work: She's stacking a capacitor (二) on a dinosaur bone (丨) on a capacitor (二). She's not very successful, but then she gets the idea to use steel beams (工) as support.

鱼 = ⺈ + 田 + 一 : Yu the Great set up a small rice field just inside the entrance of the space station, and there are some fish swimming in the rice field. The space station's crane spotted them and wants to snap one out of the rice field, but just as he was about to snatch one of them, Yu the Great hit him with a flute.