搜题请搜索小程序“爱下问搜题”
问题
单项选择题
列车侧向通过关节型道岔的速度不高于（）。
A、15km/h
B、25km/h
C、40km/h
D、50km/h
答案
参考答案：A
单项选择题
平衡反应中枢位于（）。
A.脊髓
B.延髓
C.皮层
D.中脑
E.脑桥
查看答案
选择题
— Did you go Dutch after that meal, I mean, with the other five friends?
— ______.
A. Yes, they did
B. Yes, they paid for the meal
C. No, they didn’t
D. No, because it was my treat that day
查看答案
