寄往每个寄达国或地区的包裹费均不相同。() .. 十点题库

在溶液中浓度相同的各种离子被吸附到胶体扩散层中的比例叫（）

A.阳离子交换量
B.阳离子交换力
C.盐基饱和度
D.交换性离子有效性

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小李负责对项目进行成本估计工作。因为要求成本估计尽可能精确，所以小李决定首先（）

A . 选择一种计算机工具软件
B . 利用以前的项目成本估计
C . 确定并估计项目的每项工作的成本
D . 咨询专家

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听力原文：Man: And today I'm talking to Angela Morgan. Angela, what made you decide to fly round the world in a helicopter？

Woman: People often ask me why I decided to do it but I'm surprised they don't ask 'Why did you wait so long？' because I'm 57 now! I'm sorry I didn't do it years ago, because it was such a wonderful experience. But the main purpose for going was to collect ￡500,000 for sick children by getting different companies to pay us money for each kilometre that we flew.
Man: And now everyone calls you the flying grandmother!
Woman: Yes, the thing about growing older is that you don't feel any different inside, so
you have to do as much as you can while you can. I'm healthy, and my own children are grown up, so I was free to go.
Man: And what about preparing for the trip？
Woman: Well, it took five months to plan. I was going to go with my husband, but he couldn't take time off work. Instead I made the trip with my flying teacher who became a great friend while she was teaching me to fly three years ago. I passed my flying test after two weeks; found it quite easy.
Man: And what was the trip like？
Woman: It was really exciting flying over so many different countries. The only thing was that we weren't able to spend much time sightseeing because we only stopped to get water and to camp. We took very little with us, but we did have tents and cooking things to use at night. We had to spend two days in Thailand because of an engine problem, but that was the longest we spent anywhere. Fortunately nothing else went wrong, so we just kept on going after that.
Man: What did you enjoy most about the trip？
Woman: The most wonderful thing about flying was seeing the differences in the countryside as we flew across 26 countries in 97 days. We flew over oceans and close to mountains; sometimes it was quite frightening, but we didn't travel when it was dark. We spent several nights camping in the desert and the sky was just full of stars. I made a video of the trip; you'll see it in a minute.
Man: Was there anything that you missed while you were away？
Woman: Well, to my surprise I didn't miss going to work or going out to restaurants or films. The most difficult thing was sitting still all the time; I normally play tennis and swim several times a week, so I started to feel very unfit. I missed hot water and proper showers sometimes too, but not as much as I thought I would!
The main reason for Angela's trip was to
A．make money for her business.
B．make money for other people.
C．have an exciting adventure.

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方钻杆两端均为左螺旋细螺纹。（）

A . 正确
B . 错误

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承受相同扭矩且长度相等的直径为d1的实心圆轴与内、外径分别为d2、D2(α=d2/D2)的空心圆轴，二者横截面上的最大切应力相等。二者质量之比(W1/W2)为( )。

A．(1-α4)3/2B．(1-α4)3/2(1-α2)C．(1-α4)(1-α2)D．(1-α4)2/3(1-α2)

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当按下手持话机上的EMERCALL时，下列哪个选项正确（）

A . A、客舱可直接和机组通话
B . B、ACP上ATT闪亮
C . C、ACP上EMER CALL将闪亮

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PLC电气控制工程设计图纸包括（）。

A.电气原理图
B.电气元件布置图
C.电气安装接线图
D.元件符号图

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公平正义朴素的含义包括（）

A . 惩恶扬善
B . 是非分明
C . 办事公道
D . 态度公允

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患者男性，65岁。“肝硬化伴上消化道大出血”入院，出现性格改变、行为异常，有扑翼样震颤，该患者可能出现的并发症为

A . 原发性肝癌B . 中枢神经系统感染C . 肝性脑病D . 肝肾综合征E . 肝肺综合征

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统计整理的主要方法有两种，对统计对象及其有关数据进行分类的是（）

A、统计整理
B、统计分组
C、统计表
D、统计调查

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以下各项关于液压支架的液压控制系统特点说法不正确的是（）。

A、液压系统复杂，元件多。
B、工作环境恶劣、潮湿、粉尘多。
C、供液路程长，压力损失不大。
D、工作压力高。

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在RTC IV量化分析中，A1自然本我的性格中，温和为最高、表现为次高，温和与表现指标均大于自我期望，其它指标小于自我期望，这样的组合动物名称是（）。

A.会说话的熊猫
B.纯老虎
C.勇猛的孔雀
D.纯熊猫

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三段制度与两段制度相比在同样的生产率的条件下。可以各到断面温度均匀的加热质量。

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韩国禁止（）性质的海外投资。

A.致力于海外尖端技术向国内引进的投资
B.可能对韩国对外关系起重大不利影响的项目的投资
C.有损于国威的投资
D.对有损于公德风尚项目的投资
E.可能对韩国经济起重大不利影响的项目的投资

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丹参中主要含有的醌类化合物为____醌类。 48、中药紫草中的紫草素属于____醌类化合物。 49、根据蒽醌类衍生物羟基分布情况,可进一步将其分为____型蒽醌和____型蒽醌。 50、小分子香豆素因具有____,可用水蒸气蒸馏法提取。 51、香豆素类具有____结构,可以发生异羟肟酸铁反应而显____色。 52、联苯环辛烯型木脂素的主要来源是____属植物。 53、多数三萜类化合物的基本母核由____个碳原子组成。根据异戊二烯法则,其结构可视为____个异戊二烯单位聚合而成。 54、羊毛脂烷型四环三萜的结构特点是A/B环、B/C环和C/D环都是____式,C20为____构型。 55、苦参总碱中含量最高的生物碱类化合物是____。 56、红豆杉中的主要生物碱类化合物为____,其主要生物活性为____作用。

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