潜水艇从潜行变为上浮,在浮出水面之前,V排不变,深度变小,所以所受的浮力不变,压强减小.
故选 A.
潜水艇从潜行变为上浮,在浮出水面之前,所受海水的压强和浮力变化情况正确的是( ) A.压强减小,浮力不变 B.压强增大,浮力不变 C.压强不变,浮力变大 D.压强不变,浮力变小
潜水艇从潜行变为上浮,在浮出水面之前,所受海水的压强和浮力变化情况正确的是( )
A. 压强减小,浮力不变
B. 压强增大,浮力不变
C. 压强不变,浮力变大
D. 压强不变,浮力变小
A. 压强减小,浮力不变
B. 压强增大,浮力不变
C. 压强不变,浮力变大
D. 压强不变,浮力变小
物理人气:649 ℃时间:2019-10-29 12:43:44
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