[多选题] 钢丝绳出现下列哪些情况之一者应予报废。( ) A. 钢丝绳在一个节距中有表17所示的断丝根数者 B. 钢丝绳的钢丝磨损或腐蚀达到钢丝绳实际直径比其公称直径减少7%或更多者,或钢丝绳受过严重退火或局部电弧烧伤者 C. 绳芯损坏或绳股挤出;笼状畸形、严重扭结或弯折 D. 钢丝绳压扁变形及表面起毛刺严重者,或钢丝绳断丝数量不多,但断丝增加很快者
第18题: [单项选择]When the author cited the Brazilian legend he was ______. A. trying to add a little humor B. trying to illustrate his earlier point C. simply joking D. being religious 参考答案:B 答案解析:前文有viruses waiting for a disease,说明此土地表面祥和,隐伏病害,因此作者用意是进一步阐明前述观点。