题目: 泵轴要用不低于()#优质碳素钢制造。A、20B、30C、35 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0108/9452ca49f2210519651732378dad3092.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 Which of the following is not a credit instrument?()A.CheckB.promissory noteC.draftD.coin 查看答案
题型:单项选择题 Remember to ask for a () of quality for these goods; otherwise they will not offer any maintenance.A. warrantyB. promiseC. certificateD. receipt 查看答案