题目: 竹叶状灰岩 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0213/0f917220f59cc81f63b4fffbb10b814c.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:单项选择题 The service life of distress signals must be not more than().A.forty two months from the date of manufactureB.thirty six months from the date of the last inspectionC.twenty four months from the date of approvalD.twelve months from the date of purchase 查看答案