飛行員的反應試驗
這是一個美國飛行員反應試驗。你能堅持超過2分鐘，以順利通過測試。一般普通老百姓沒有任何的訓練都能夠忍受10秒，職業球員 - 30秒，外科醫生 - 70秒，飛行員 - 150秒，受過專門訓練的黑猩猩可待機20分鐘以上！單擊並按住紅色正方形。現在，移動它，這樣你既沒有觸摸牆壁，也沒有得到任何的藍色塊打免...
酯化反應催化劑
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