問題詳情
20．下列哪个说法是正确的？ （）
(A)．体操运动员双手握住单杠吊在空中不动时处于失重状态；
(B)．蹦床运动员在空中上升和下落过程中都处于失重状态；
(C)．举重运动员在举起杠铃后不动的那段时间内处于超重状态；
(D)．游泳运动员仰卧在水面静止不动时处于失重状态。
(A)．体操运动员双手握住单杠吊在空中不动时处于失重状态；
(B)．蹦床运动员在空中上升和下落过程中都处于失重状态；
(C)．举重运动员在举起杠铃后不动的那段时间内处于超重状态；
(D)．游泳运动员仰卧在水面静止不动时处于失重状态。
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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