A.even when it was put in a murky place all day.
B.even if it was placed in the moonlight.
C.even when he was observing it from a dark place.
D.even if it was kept in a dark place from time to time.
第1题
车轮踏面的圆周磨耗,在距轮缘内侧()一处的踏面测定。
A.135mm
B.70mm
C.50mm
D.22mm
第3题
车轮踏面圆周磨耗深度是在距轮缘内侧()的踏面处测量。
A.65mm
B.70mm
C.80mm
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