皮皮学，免费搜题
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【单选题】
下列 不是液压传动的特点。A.
能实现无极调速
B.
能实现传动
C.
对温度的变化比较敏感
D.
容易实现过载保护
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Chinese customers have started to ( ) from imported art paper to locally made paper.中国顾客的兴趣已经开始从进口纸转向了当地制造的纸张。
A.
sweet
B.
switch
C.
swift
D.
sweat
【简答题】Mr Smith, of the speech, started to read anovel. A.tired boring B. tiring bored C.tired bored D. tiring boring
【单选题】关于主键以下说法错误的是 。
A.
Access 2003并不要求每一个表中都必须包括一个主键。
B.
在一个表中只能指定一个字段为主键。
C.
在输入数据或对数据进行修改时，不能向主键的字段输入相同的值。
D.
利用主键可以加快数据的查找速度。
【单选题】It’s high time you . [ ]
A.
start to work
B.
would start to work
C.
had started to work
D.
started working
【单选题】Not until he left his home _____ to know how important the family was for him.
A.
did he begin
B.
had he begun
C.
he began
D.
he has begun
【简答题】The story I am going to tell you happened about three years ago when I started to learn how to drive. At first, I was very frightened, and I thought I could never learn how to drive a car. Driving a c...
【简答题】Mr Smith, of the speech, started to read anovel. A.tired boring B. tiring bored C.tired bored D. tiring boring
【单选题】It's high time you _____.
A.
start to work
B.
would start to work
C.
started to work
D.
had started to work
【简答题】Before Carol started to work，she learned how to
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