【简答题】(10分)有一受预紧力 和轴向工作载荷F=1 000 N作用的紧螺栓连接,已知预紧力 =1 000N,螺栓的刚度C b 与被连接件的刚度C m 相等。试计算该螺栓所受的总拉力F 0 和残余预紧力F′′。
【单选题】销售业务的预收货款,在余款收到时,需要进行转账处理,有可能的是:
【简答题】School news (June 8th, Friday) School trip: Students in Junior Two had a great time during the school trip on Children’s Day. They went to Ocean Park by bus. The teachers were very happy because the s...
【单选题】选取 【横排文本工具】,在其选项栏内单击( )按钮,可以弹出【字符】面板和【段落】面板。