题目内容

为鉴别诊断还应做

A. 出血时间
B. 凝血时间
C. 白细胞计数
D. 大便常规镜检
E. 大便隐血试验

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Section A In this section, you will hear five short conversations. Each conversation will be read only once. At the end of each conversation, there will be a pause. During the pause, read the question with three choices marked A, B and C, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the centre. What does the woman imply

A. The world is very competitive and often unfair.
B. There are over 300 jobs for you to apply for.
C. People are very kind to dogs and give them a lot to eat.

钢筋按其在构件中的作用可分为______、______。

pH测定法的原理是:水中植物的光合作用和呼吸作用的变化,使溶在水中的______量发生变化,从而使pH发生变化。

分解作用的最终目的在于稳定和提高土壤中有机物的含量,为碎屑食物链提供物质基础。( )

A. 对
B. 错

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