根据工作对象的重量，正确选择千斤顶。不准超出千斤顶（）负荷。_爱下问搜题

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问题填空题

根据工作对象的重量，正确选择千斤顶。不准超出千斤顶（）负荷。

答案

参考答案：额定

阅读理解

阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。

     Kenny and Bobbi McCaughey live in Iowa. They have a big family. Mikayla is the oldest child in the family.
She is six years old. The other children are Brandon, Joe, Kelsey, Kenney, Natalie, Alexis and Nathan. They are
all five years old. Why are they all the same age? ______ (1). They are septuplets! 　　
     It is hard work to look after seven babies at the same time. ______ (2). In the beginning, many people
helped them. They helped to feed, clean, and dress the babies. Every week, the septuplets used about 170
diapers (尿布)!______ (3).
     Now the children are older. The septuplets started school this year. But they go to school at home, like
their big sister, Mikayla. When Mikayla was ready for school, Kenny and Bobbi decided to teach her at home.
______ (4). Now Bobbi is the teacher for all eight of her children.

A. They drank a lot of milk, too.
B. Because they were born together.
C. Last year, Bobbi was Mikayla's teacher.
D. Kenny and Bobbi are interested in cooking.
E. But Kenny and Bobbi didn't look after them alone.

判断题

营利性展览通常以贸易性展览会为主。