问题
单项选择题
800m≤R<2000m的无缝线路地段,作业轨温超过锁定轨温(),拨道量不超过20mm。
A、+5℃~-10℃
B、+15℃~-20℃
C、+10℃~-15℃
D、-10℃~+10℃
答案
参考答案:C
800m≤R<2000m的无缝线路地段,作业轨温超过锁定轨温(),拨道量不超过20mm。
A、+5℃~-10℃
B、+15℃~-20℃
C、+10℃~-15℃
D、-10℃~+10℃
参考答案:C
用单词的适当形式填空。
小题2: There are some _______ in the tree. 小题3: I have some ________ to do on weekends. 小题4: Look! They _________basketball over there. 小题5: ________ for your help. 小题6: Sunday is the _______ day of a week. 小题7:It’s time for us _________ up. 小题8: Let’s __________ in the river. 小题9:Han Mei _________ documentaries because they are boring. 小题10: Lily’s brother plays computer games very ________. |