用于胶黏的材料包括()等。
A.淀粉黏合剂
B.纤维素胶黏剂、动物胶
C.书背布、书背纸
D.铁丝、金属丝圈
E.合成树脂黏结剂
参考答案:A, B, E
解析:本题考查装订材料的种类。
A: I haven't been driving as fast as the other cars. B: ______
A.Sorry, madam. I am sorry there is something wrong with your car.
B.Don't be arguing with me. I'll kill you if you drive so far next time on the superhighway.
C.The other cars Different cars have to observe different traffic rules, you know.
D.I'm sorry, madam, your speed limit's fifty-five miles per hour. I have to give you a ticket.
下列说法不符合掘进机的完好标准的是()。
A、千斤顶(油缸)活塞杆镀层无脱落,局部轻微锈斑面积不大于50mm2;划痕深度不大于0.5mm,长度不大于50mm,单件上不多于3处;
B、切割头无裂纹、开焊,截齿完整,短缺数不超过总数的10%;
C、刮板齐全,弯曲部超过15mm;
D、电气设备的绝缘电阻值:660V等级不小于30kΩ,127V等级不小于10kΩ。