全称命题的否定和否命题
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we should pay attention( ) to industry ( )to agriclture.A.either or B.neither nor C.not but D.both and 应选择什么
·用一根长1.2米的杠杆挑水,两个水桶分别重200N和400N,当肩膀放在什么位置最舒服.那么肩膀受到压力多大急
关于机械行业铣床加工请问一下大神们一个问题,直径2+0.01沉孔深6毫米的加工要领(非盲孔),现有条件机床稳定不需考虑,刀具是三毫米刀杆加长两刃2.0合金刀具,哪位大神解说一下感激涕零.
用一根长1.2米的杠杆挑水,两个水桶分别重200N和400N,当肩膀放在什么位置最舒服.急
最好的合金强度是多少请讲出至今(2009.11)最好的合金,或者其他硬质材料的强度,要求从强度各种分指标,和其他性能说明,不要说理论的,要说国际市场上可以购买到的.主要以抗撞击为主,而耐摩
合金的优点强度大中的强度是什么意思?
铣床的加工问题1小格是0.05毫米.要求再进20丝 是多少小格?计算公式是什么?
有什么关于野生动物的诗句或名人名言写一篇议论文
Mrs Black has got____ instead of getting any better.Mrs Black has got____ instead of getting any betterA.more bad B.a little worse C.much badly D.a lot of worse
You should find a more_________(实际的)method of getting better gradesYour views on education are ____(alike)to mineLiu xiang is a _______(succeed)runnerTom is an ________man and you can find him in many school ________(act)How stubborn he is !You
现在企业对公共英语五级的证书认可吗?谢啦
南京寒假想学公共英语,考个证书?
PETS 3的证书难考吗?
做铜极用什么雕刻机效果比较好
请问小功率的雕刻机适合做什么?
世界古代史上地跨亚欧非三大洲的帝国都有哪些?最早的是哪一个?
family一词中第2个音节到底读 米 还是 么
Computer Science taught in our middle school.改错
求一篇完形阅读Family好像大意是一个母亲她对待同事和对待自己的孩子性格差了很多下班回来孩子好像送她花瓣,但是她没察觉,并骂了他.之后最后一句是family=Father and mother i love you,
改错题:As we all know,most of our middle school students feel somehow nervous whenever we're talking an exam.答案是把our改成us.为什么啊?谢谢!
plant life可数吗
A comparison of 怎么用?我这有个课件是A comparison of the plant life forms found in...
plant
【选择】25.He asked me ( )I was sure my mother( )(if ; would come / that ; will come / that ; would come / if ; will come)这题选什么.理由是.
谚语her husband is a real bear的意思her husband is a real bear意思
世界上跨3个大洲的古代帝国都有那些?
一弹簧测力计由于弹簧老化而换用了一新弹簧,将弹簧测力计竖直挂起来,当下面不挂重物时其指针恰好指在5N刻度处,当弹簧下挂上20N的重物时,弹簧测力计示数为30N,当弹簧下挂上多重物体时,
如果没有弹簧测力计,用什么代替?谢谢了say
it () be a red but I'm not sure 是填might 还是must
-Whose new car is there?-It____Mr White's.but I'm not so sure.A must be B might belong toC maybe D may be为什么选"D"呢?
I can't decide where___________.A.to live B.to live in 请提供理由,最好能拓展到同类型的知识点.
I can't decide _______.A where to live in B where to live C what to do it Dhow to do 选哪个,为什么?