骨与关节结核在某些部位好发的原因中,不包括()
A.该部位负重大
B.该部位活动多
C.该部位易于遭受慢性或积累性劳损
D.该部位肌肉附着少
E.该部位血运丰富
参考答案:E
Among the 15-year-old children, some ____ studying in university while others are still learning to read and
write. [ ]
A. should have been
B. would have been
C. can be
D. must be
属于专项点检的内容是()
A.油量
B.故障隐患
C.润滑油品质
D.汽缸椭圆度