症状性癫癎的临床特点不包括()。
A.发病与年龄有相关性,有自愈倾向
B.发作频繁
C.脑电图局灶性异常多见
D.一般有神经系统阳性体征
E.神经影像学检查多发现异常
参考答案:A
He doesn't seem to be aware of the coldness of their ______ towards his suggestion. [ ]
A. altitude
B. identity
C. attitude
D. expression
如图所示,恒定的拉力大小F=8N,方向与水平线夹θ=60°角,拉着绳头使物体沿水平面移动=2m的过程中,拉力做了多少功?