[问答题]含留体皂苷水溶液,分别加入酸管(加盐酸)碱管(加氢氧化钠)后振摇,结果是( )
[单选题]夯实水泥土桩在施工过程中,在桩顶面应铺设一定厚度的褥垫层.褥垫层厚度应取为 A.100~300mm B.300~500mm C.500~1000mm D.1000~1500mm
[问答题]马尔科夫尼科夫规律适用于C
[单选题]More than seven hundred years ago, the Prince of Wales had a very big and brave dog called Gelert. One day the Prince wanted to go hunting with his men. He told his dog to stay at home and look after his baby son. The baby was in a wooden cradle, which was like a small bed.When the Prince came back from hunting, Gelert ran out to meet his master. He wagged his tail and jumped up to put his paws on the Prince’s chest. Then the Prince saw the blood on Gelert’s jaws and head. “What have you done?” the Prince said. He rushed into his house and looked for his baby son. The cradle was lying on its side on the floor. The clothes were torn and there was blood on them. “So you have killed my son?” the Prince said angrily.” You unfaithful dog!” He took out his sword and killed the dog.Just as Gelert was dying, he managed to bark. Then the Prince heard a baby call to the dog. The prince ran out of the house and saw his son lying on the ground unhurt. Near him was a dead wolf. Then the Prince knew that Gelert had defended the baby and killed the wolf. Then Prince ran back into the house but he was too late. Gelert was dead. The Prince was very sad indeed. Tears ran down his face when he realized he had killed his faithful friend. The Prince carried the body of his brave dog to the top of a mountain and buried him there. A.ter this, the Prince never smiled again. E.ery morning at dawn, he walked up the mountain and stood by the dog’s grave for a few minutes. If you go to Mount Snowdon inWales, people will show you where Gelert is buried. There is a sign by his grave. It reminds people of a brave and faithful dog.C.oose the right answer:The Prince was surprised to see blood on Gelert.s _______________.得分/总分 A. jaws and head 2.00/2.00 B. paws C. head D. tail
[多选题]与普通股相比,优先股有以下( )特征.A、优先分配股利的权利 B、优先分配剩余资产的权利C、固定的股息率 D、有限的表决权
[填空题]气穴产生在 压区,而气蚀产生在 压区.
[单选题]钢尺量距时,垂曲误差使所测距离( ) A.偏小 B.不变 C.偏大或偏小 D.偏大
[多选题]反映流动资产周转速度的指标有( ). A、流动资产周转率 B、流动资产垫支周转率 C、存货周转率D、存货构成率 E、应付账款周转率
[问答题]试列出半刚性材料的基本特性和通常的种类
[单选题]在强夯法中,计算强夯的影响深度的Menard公式为_ A.10hWD.= B.10hWkDD= C.10sWDD=D.10 s WkDD
[单选题]如果容器组件p的布局是B.rderLayout,则在p的下边中添加一个按钮b,应该使用的语句是( )A. p.add(b);B. p.add(b,North);C. p.add(b,South);D. b.add(p,North);
[单选题]热源温度为 1200K ,环境温度为 300K ,高温热源提供热量1000J 中的无效能为( )J A.250B.750C.300D.400
[判断题]调频厂增加出力时将使系统率下降 调频厂增加出力时将使系统率下降 .
[单选题]在多相燃烧中,根据燃烧条件的不同,可以将多相燃烧分成三种燃烧区域.其中,燃烧反应速度取决于化学反应速度的是( ).扩散燃烧区域 B、动力燃烧区域 C、过渡燃烧区域 D、以上都是
[多选题]炼焦化学产品包括( )和煤焦油. A.焦炭B.焦炉煤气C.煤炭D.以上都不正确
[判断题]煤的发热量有高位发热量和低位发热量之分.
[多选题]用习近平新时代中国特色社会主义思想武装全党,是( )的必然要求.A.建设高素质专业化干部队伍B.坚持和发展中国特色社会主义C.推动全面从严治党向纵深发展D.实现“两个一百年”奋斗目标、实现中华民族伟大复兴中国梦
[判断题]如果将国际投资看作一种国际交换,则它就是指用将来的商品去交换现在的商品.
[问答题]命中率法是当测验用来做取舍的依据时,用其正确决定的比例作为效度指标的一种方法.命中的情况是指
[计算题]如图所示挡土墙高7 m,墙背竖直、光滑,墙后填土面水平,各填土层物理力学性质指标如图所示.试计算作用在该挡土墙墙背上的主动土压力合力. ______ _____________ | | / |γ1=18kN/m^3 | | / |ψ1=20° | | / |c1=10kPa 7m | | / | | | / |γ2=19kN/m^3 | | / |ψ2=30° | | / | c2=0――――――――――――――――
[判断题]连续型变量可以作单项式分组或组距式分组,而离散型变量只能作组距式分组.( )