下述哪一点不属瘀血致病的临床表现()。
A.唇甲色淡
B.肌肤甲错
C.刺痛拒按
D.出血,紫绀
E.肿块固定
参考答案:A
如图所示,物体A重120N,物体B的体积是1dm3,此时A恰能沿着水平桌面以0.2米/秒向右做匀速直线运动;若将B始终浸没在水中并以原速度匀速上升,需要对A施加100N水平向左的拉力,则下列选项正确的是(不计摩擦、绳重及滑轮重,g取10N/kg)( )
A.物体B匀速下降的速度是0.1米/秒
B.物体A向左做匀速直线运动与桌面之间的摩擦力为100N
C.物体B在水中匀速上升时,绳的拉力功率为2W
D.物体B密度是3×103千克/米3
--They were ________ busy ________ with each other ________ the time.
--- How cool the guys are !
A.too; to talk; to forget
B.too; talking; to forget
C.so; to talk; that they forgot
D.so; talking; that they forgot