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Maybe I don't really want to leave you、but to stay alone is very happy、too 麻烦翻译性下 乐于助人的同学作文 气体保护焊焊接时产生的烟雾是否有毒 ,对人体有什么危害? 二氧化碳保护焊焊铁产生的气体有毒吗谢谢你的回答,能不能在详细点, my daily life 铜焊接产生的气体烟雾有毒吗?对人体有哪些危害? 如何磨练意志 磨练意志的计划一个计划 the investments are temporary and made from excess funds that you do not imediately need to conductoperation.until you need these funds,they are invested to earn a return.you should make these investments in sercurities that can be converted into cas 《我喜欢的老师》作文跪求! “我心与你同在”用英语怎么说以及有没有关于爱情的诗,最好是那种让人一看就感动的那一种. （世界与你同在）用英语怎么说? 机器人焊接气体流量有什么影响混合气体AR：CO2 9:1 到机器人时调整混合 现在表旁边的气柱被调成18:2了 是不是气流量就变成20L/MIN?有什么影响?具体的工艺评定没有做过 一般情况下机器人焊 焊接时,保护气体流量表容易结冰,请问是什么地方的问题,有什么解决方法 TIG焊接时保护气体流量范围 He----that right now.A.doesn't B.need doing C.needs to D.needn't to不好意思A选项打错了，应该是doesn't need do 气体流量对CO2保护焊熔深的影响?知道的请介绍一下 you should know that he______you money but your support A、needn't B、needs to C、doesn't need D、dyou should know that he______you money but your supportA、needn't B、needs to C、doesn't need D、doesn't need to要理由. it is a problem that doesn't need___right nowto solveso be solvingbeing solvedsolving 英语作文：my life in middle school （我现在还没上初中,要用将来时 will+v be going to+v be+v----ing he _____go to work at weekend a needn't to b doesn't need to c doesn't need d shouldn't to he _____go to work at weekend a needn't to b doesn't need to c doesn't need d shouldn't to 这道题是不是选C does‘nt need 关于need,情态动词和行为动词need的区别是什么,什么时候用needn't什么时候用doesn't need, you must wait for the green light .改为否定句 填空 You must wait_______the green light If you want to cross a street,you must____(wait)for the green light. You must wait for the green light 如何改不祈使句 直接 The force be with you 我不想有“愿...”的意思.我要表达原力已经与你同在,永远与你同在.语法上对吗,如果不对该怎么改. 《大笑江湖》中愿原力与你同在为什么给说成了别嚣张没什么用本山说的是英文,他那个跟班怎么给翻译成别嚣张没什么用.这两句有什么联系? 风焊怎么使用 愿上帝与你同在 一般这句话用在什么情况下是祝福语吗 二氧化碳是不是风焊? 焊接使用的气体