心前区捶击时，小鱼际侧距胸壁距离为（）.
A.15～25cm
B.20～25cm
C.15～20cm
D.20～30cm
E.15～30cm
参考答案：B
In many people’s opinion, that company, though relatively small, is pleasant _______.
A．to deal with
B．dealing with
C．to be dealt with
D．dealt with
如图，AO、BO、CO是完全相同的三条绳子，将钢梁水平吊起，当钢梁足够重时，结果AO绳先断，由此可确定
A、θ＝120°
B、θ＞120°
C、θ＜120°
D、θ＜60°
