题目内容
水平和方向不良是引起晃车的主要原因。
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高低不良主要引起轮轨间的振动和冲击。
轨道方向不良主要引起列车的蛇形运动。
轨底坡用道尺测量。
Yang: Oh, hello, Mr. Johnson. How are you doing?Johnson: Fine, thanks. (2)_____________to tell you I’m traveling to Shanghai next week. Could we meet, say, next Tuesday for our contract?Yang: Just a minute, let me check my schedule. Sorry, Mr. Johnson, (3)_________________________.Johnson: Can you (4)_____________Wednesday then?Yang: Yes, Wednesday is fine.Johnson: Good. What about 10 o’clock in the morning?Yang: (5)_____________.Johnson: Great. So I’ll see you at 10 o’clock next Wednesday morning.Yang: See you then. Goodbye, Mr. Johnson.Johnson: Goodbye, Mr. Yang.
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