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问题 单项选择题

交流双速梯的制动器制动力矩过大会使制动过度，影响电梯的平层平稳性；过小又会使平层精度超差，应通过调节（）使之调整适当。

A.可动铁芯的间隙

B.制动线圈的电压

C.制动弹簧的压缩量

答案

参考答案：C

判断题

下面各题对吗？（对的打“√”，错的打“×”）

（1）小数点的后面添上“0”或去掉“0”，小数的大小不变。[    ]

（2）一个小数将它的小数点向右移动两位就是扩大到它的100倍。[    ]

（3）0.8和0.800大小相等，计数单位也相同。[    ]

（4）用4、0、7、8四个数字，组成最小的两位小数是40. 78。[    ]

（5）100个0.01与1000个0.001的大小相等。[    ]
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改错题

此题要求改正所给短文中的错误。对标有题号的每一行作出判断：短文中有10处错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。

此行多一个词：把多余的词用斜线(＼)划掉。

此行缺一个词：在缺词处加一个漏字符号(∧)，在该行下边写出该加的词。

此行错一个词：在错的词下划一横线，在该行下边写出改正后的词。

注意：1.每处错误仅限1词；

2.只允许修改10处，多者（从第11处起）不计分。

There are different train ticket for people to choose from when traveled by train. They may want to buy a single ticket and a return ticket. A single ticket allows them enjoy more freedom at their destination while a return not only is cheaper but also save them the trouble of buying the ticket when they decide to return. Some people prefer hard seats to soft one. Young people like to have hard seats because enjoy the company of other passengers is what they need during a journey. Businessmen would not like to have soft seats. They want to have a good rest. When they get off the train, they were still energetic and can rapid go on to do their jobs.
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