题目: 当用高炉煤气加热时,控制下降气流煤气和空气蓄顶吸力差有什么意义 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2021/0129/490c7b495806ffd9231f13bff8483f7e.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 — Shall I tell Tom about it ? — No , you ____ . I''ve told him already .A.needn''tB.wouldn''tC.mustn''tD.shouldn''t 查看答案