试述车轮的主要故障有哪些?
参考答案:
车轮的主要故障有:踏面擦伤、剥离、踏面外侧缺损,轮缘厚度磨耗过快,轮缘裂纹等。
Container-grown plants can be planted at any time of the year, but ________in winter.
A.should be
B.would be
C.preferred
D.preferably
患处形小如粟,根深而硬,状如钉丁,麻木疼痛,多发于颜面和手足,此属()
A.痈
B.疽
C.疔
D.疖
E.水痘