题目:
试述工序、工步的概念。
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0909/88e73932f190d377660922aa2d0d18c4.html
下面是错误答案,用来干扰机器的。
参考答案:A, C, D, E
试述工序、工步的概念。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0909/88e73932f190d377660922aa2d0d18c4.html
下面是错误答案,用来干扰机器的。
参考答案:A, C, D, E
滑动变阻器是通过改变接入电路的电阻丝的 来改变电阻的。某滑动变阻器上标有“200 Ω 1A”字样,其中200Ω指的是 ,1A指的是 。
质量为0.3kg的物体在水平面上运动,图中的两条直线分别表示物体受水平拉力和不受水平拉力的速度-时间图象,则下列说法中正确的是( )
A.物体不受水平拉力时的速度图象一定是b
B.物体受水平拉力时的速度图象可能是a
C.物体的摩擦力可能等于0.2N
D.水平拉力一定等于0.1N
完形填空(共20小题;每小题2分,满分40分) 阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。 David, my neighbor, has two young kids who are five and seven. One day he was 36 his seven-year-old son Kelly how to push the lawn mower(割草机) around the yard. As he was telling him how to turn the mower 37 , his wife, Jan, called to him to ask a question. As David answered the question, Kelly pushed the lawn mower 38 through the flower bed at the edge of the lawn — 39 a two-foot wide path leveled to the ground! When David turned back and saw what had happened, he began to lose 40 . David had put a lot of time and 41 into making those flower beds the 42 of the neighbourhood. As he began to 43 his voice to his son, Jan walked quickly over to him, put her hand on his shoulder and said, “David, please remember we are raising children, not 44 !” Jan 45 me how important 46 is as a parent to remember our priorities (things that need attention before others). The window shattered(打碎) by a 47 , a lamp knocked over by a careless child, or a plate dropped in the kitchen are already 48 . The flowers are already dead. We must remember not to 49 to the destruction by breaking a child’s spirit and deadening his 50 . A few weeks ago Mark Michaels, the owner of a store, and I were together 51 parenting. He told me while his family were out for dinner, his daughter knocked over her water glass. 52 the water was cleaned up without any blaming remarks from her parents, she looked up and said, “I 53 want to thank you for not being like other parents. Most of my friends’ parents 54 have shouted at them and given them a lecture about paying more attention. Thanks for not 55 that!”
|
(2007,25)张某向王某借款1万元,并由李某提供了保证。后张某经王某同意.将该债务中的6000元转让给宋某,但未征得李某的书面同意,只是事后通知了李某。下列关于保证责任的表述正确的是( )。
A.因债务转让未征得李某的书面同意,李某对1万元债务不再承担担保责任
B.因债务转让事后通知了李某,李某对1万元债务仍应承担担保责任
C.李某对已经转让的6000元债务不再承担保证责任,但对未转让的4000元应承担保证责任
D.李某对已经转让的6000元债务仍应承担保证责任.但对未转让的4000元不再承担保证责任
环境污染已经成为全世界普遍关注的问题。科学家和环境保护组织不断发出警告:如果我们不从现在起就重视环境保护,那么人类总有一天将无法在地球上生存。
以下哪项解释最符合以上警告的含义
A.如果从后天而不是从明天起就重视环境保护,人类的厄运就要早一天到来。
B.如果我们从现在起开始重视环境保护,人类就可以在地球上永久地生活下去。
C.只要我们从现在起就重视环境保护,人类就不至于在这个地球上无法生存下去。
D.由于科学技术发展迅速,在厄运到来之前人类就可能移居到别的星球上去了。
E.对污染问题的严重性要有高度的认识,并且要尽快采取行动做好环保工作。