机械产生温升过高现象,反映了轴承等()部位的工作状况失常。
A.摩擦
B.受压
C.联接
D.接触
参考答案:A
书面表达
假定你是李华,昆明市某中学高三学生。你在十一月十日收到笔友Mike的来信。请你认真阅读并写一封回信给他。
注意:1.词数:100词左右;2.回信包括对方想要了解的所有内容;3.开头语已写好。
Dear Li Hua,
Glad to hear from you last Monday.From your letter,I have learned something aboutKunming.Great changes have taken place in Kunming.I am expecting to pay a visit to Kunming one day in the future.
Now I am eager to know something about your school life,especially what you do in your school.I will be more than happy if you can meet my request.
I am looking forward to your letter.With best wishes.
yours,
Mike
Dear Mike,
I was very glad to ________________________________________________________________
采用比重计法进行土颗粒分析试验时对于碱性土应采用()分散。
A.氢氧化钠
B.草酸钠
C.六偏磷酸钠
D.不加