榫头按数目又可分为()、()、()

题型:填空题

问题:

榫头按数目又可分为()、()、()

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题型:填空题

任务型阅读(共10分)

Tommy is a basketbal star. He needs to eat well every day. For breakfast, he eats an apple and two eggs. And he has chicken, vegetables and strawberries for lunch. For dinner, he likes hamburgers and salad. He eats ice cream for dessert(甜点) every evening.

Tommy is in Dream Basketball Club(俱乐部). He plays basketball every day and he plays it very well. He likes Yao Ming and he often(经常) watches his basketball games on TV.

阅读短文内容,回答下列问题。

小题1:Is Tommy a basketball star?

                                                                        

小题2:What does Tommy eat for lunch?

                                                                        

小题3:Does Tommy like eggs for dinner?

                                                                        

小题4:What club is Tommy in?

                                                                        

小题5:Does Tommy watch basketball game on TV?

                                                                       

题型:填空题

()是一种价格限制手段。

A.进口关税

B.配额

C.关税配额

D.反倾销税

题型:填空题

如图所示为自动水位报警器的示意图,在水位低于B时,电磁铁所在的控制电路部分断路,_______灯亮;当水位升高到B时,电磁铁所在的控制电路部分接通,_______灯亮.

题型:填空题

矫治力来源于患者的口颌系统肌力的矫治器是()。

A.活动矫治器

B.固定矫治器

C.功能矫治器

D.磁力矫治器

E.以上都不是

题型:填空题

进行钢结构计算时,所用荷载设计值和标准值,下列说法正确的是( )

A.计算结构或构件的强度、稳定性以及连接的强度时,应采用荷载标准值
B.计算疲劳和正常使用极限状态的变形时,应采用荷载标准值
C.计算结构或构件的强度、稳定性以及疲劳强度时,应采用荷载设计值
D.计算疲劳和正常使用极限状态的变形时,应采用荷载设计值

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