焊接和铆接是不可拆的联接,螺栓连接是()的联接。

题型:填空题

问题:

焊接和铆接是不可拆的联接,螺栓连接是()的联接。

考点:冷作钣金工铆工(中级)铆工(中级)题库
题型:填空题

某商场销售一批彩电,按25%的利润定价,当售出这批彩电的75%又36台时,除收回全部成本外,还获得预计利润的20%,这批彩电共有______台.

题型:填空题

单句语法填空,每空只填一词

小题1:The settlement is home to nearly 1, 000 people, many of         left their village homes for a better life in the city.

小题2:To stay awake, he finished a cup of coffee and ordered        .

小题3:The church tower which         _______ _______ (restore) will be open to tourists soon. The work is almost finished.

小题4:My uncle hesitated for a long time _______ he decided to buy a flat, as he was not quite sure whether the price of the house would go up or not.

小题5:Different methods to touch the keys will result _______ different display of the color.

题型:填空题

交流发电机发出的电如何变成直流电?

题型:填空题

在配电线路发生的故障中,发生频率最高的是()。

A.单相接地故障

B.两相短路故障

C.三相短路故障

D.多相接地故障

题型:填空题

无机材料分为()

A、合成高分子材料

B、金属材料

C、天然材料

D、非金属材料

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