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【判断题】
速度小于120km/h区段，瞭望条件大于2000m以上时，钢轨探伤小车、轨道检查小车作业，邻线来车可不下道。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】watch the video and try to fill in the following blanks.
【简答题】watch the video and try to fill in the following blanks.
【简答题】watch the video and try to fill in the following blanks.
【单选题】确定终锻温度，主要考虑在锻造结束之前，金属还应有足够的塑性，锻件锻后能获得[ ]，没有加工硬化现象。
A.
粗晶粒组织
B.
再结晶组织
C.
细晶粒组织
D.
铸态组织
【单选题】S1: I always seem to fail every exam I take. S2: Hmm, might it be an idea to try to review systematically. Q: How is the first speaker going to do? 0101dh001
A.
Try his best to learn.
B.
Try to review systematically.
C.
Try his best to take every exam.
D.
Try his best to take every exam carefully.
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