7时整时,时针和分针所成的角是请选择ABC*W9o7y)_9c:h8s6U;L'm1U3g'B8r9Z(|5w4z9a
A.锐角6U;L'm1U3g'B8r9Z(|5w4z9a
B.直角6U;L'm1U3g'B8r9Z(|5w4z9a
C.钝角6U;L'm1U3g'B8r9Z(|5w4z9a