题目内容

CT扫描中,与噪声无关的是

A. 扫描时采用的算法
B. 扫描的层厚
C. 物体的大小
D. 空间的采样频率
E. X线光子的数量

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Without your timely help, ____________(我们就不能在这次谈判中获得成功).

与普通CT相比,不属于单层螺旋CT优点的是

A. 纵向分辨率高
B. 检查速度提高
C. 对比剂利用率高
D. 可一次屏气下扫完一个器官
E. 可任意断面进行回顾性重建

根据乡党委的指示,某乡政府为维护本地区社会稳定组建了社会治安综合治理办公室 (以下简称综治办)。该乡农民王某与邻居李某因宅基地的使用权产生纠纷,王某用砖块将李某砸伤。综治办接到举报后,遂将王某带到该乡派出所关押了10天,并罚款1 000元。王某不服。提起行政诉讼。 此事谁有权提起行政诉讼

A. 王某
B. 李某
C. 王某之父
D. 李某之父

Many countries face a somewhat more serious economic problems in the form of an unfavorable trade balance (贸易逆差) with other nations. Such an imbalance exists when the total value of a country’s imports exceeds that of its exports. For example, if a country buys $250 billion of products from other countries, yet sells only $100 billion of its own products overseas, its trade deficit is $150 billion. Many underdeveloped nations find themselves in this position because they lack natural resources or the industrial capacity to use these resources, and thus have to import raw materials or manufactured goods.One effect of a trade deficit is the flow of currency (货币) out of a country. In the case of an underdeveloped nation, this can cause many financial difficulties, including failure to meet debt payments and obstacles to creation of an industrial base. Even in the case of a fully developed nation such as the United States, a large trade deficit is reason for alarm. American products, made by well-paid workers in US industries, cost more to produce than those made in places lille Asia, where labor and material costs are much lower. Money spent on foreign products is money not spent on items produced by domestic industries. What is the passage mainly about()

A. Several worldwide economic problems.
B. The causes and consequences of trade deficit.
C. Lack of resources in underdeveloped countries.
D. The value of exports against imports.

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