简支梁受分布荷载作用如图4-46所示。支座A、B的约束力为()。
A.
B.
C.
D.
参考答案:C
I will tell him ___________ I see him.
A.after soon
B.soon as
C.as soon as
D.till
把重5N、体积为0.4dm3的物体投入水中.若不计水的阻力,当物体静止时,下列说法中正确的是(g取10N/kg)( )
A.物体沉底,F浮=4N
B.物体悬浮,F浮=4N
C.物体漂浮,F浮=5N
D.物体漂浮,F浮=1N