锤击、反击式碎煤机安装时标高及中心线偏差不大于（）mm。
A.2
B.5
C.10
参考答案：C
The lawyer listened with full attention, __________ to miss any point.
A．not trying
B．trying not
C．to try not
D．not to try
构成踝关节的骨是()
A．舟状骨与距骨
B．胫骨与距骨
C．跟骨与距骨
D．跟骨与骰骨
E．舟状骨与楔状骨
