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【简答题】
下列关于函数y=log 2 x的结论中正确的是______． ①与函数y=x 2 的图象关于y=x对称； ②图过定点（1，0）； ③图与直线y=-x无交点； ④定义域为[0，+∞）．
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举一反三
【单选题】曝气池混合液SVI指数是指( )。
A.
曝气池混合液悬浮污泥浓度
B.
曝气池混合液在1000mL量筒内静止沉淀30min后活性污泥浓度
C.
曝气池混合液静止沉淀30min后，每单位质量干泥形成湿污泥的体积
D.
曝气池混合液中挥发性物质所占污泥量的比例
【单选题】A concluding paragraph is your chance to_______.
A.
remind the reader of your suggestions
B.
remind the reader of your thesis idea
C.
bring the paper to a natural and graceful end
D.
both B and C
【单选题】【第三章1例题 ·单选题】 为克服对客户需求的变化缺乏敏感性、公司结构性产能过剩等问题,神大钢铁公司近年来收购了远航造船厂,参股国兴造船厂,与天州钢帘线制造厂签订了合作协议。神大钢铁公司的发展战略是( )。( 2017 年)
A.
前向一体化战略
B.
后向一体化战略
C.
密集型战略
D.
多元化战略
【简答题】对第一类负荷要求必需有( )供电。
【单选题】曝气池混合液SVl指数是指（）。
A.
曝气池混合液悬浮污泥浓度
B.
曝气池混合液在1000mL量筒内静止沉淀30min后，活性污泥所占浓度
C.
曝气池混合液静止沉淀30min后，每单位重量干泥形成湿污泥的体积
D.
曝气池混合液中挥发性物质所占污泥量的比例
【单选题】A recent article suggests that the introduction of the new iPhone 5 increased the demand for iPhone protective cases. The article suggests that these two goods are
A.
substitutes and their indifference curves are close to being straight lines.
B.
complements and their indifference curves are close to being straight lines.
C.
substitutes and their indifference curves are close to being L shaped.
D.
complements and their indifference curves are close to being L shaped.
【多选题】A concluding paragraph is your chance to_______.
A.
remind the reader of your suggestions
B.
remind the reader of your thesis idea
C.
bring the paper to a natural and graceful end
D.
all right
【单选题】The article suggests that .
A.
a woman can do all kinds of professional jobs better than a man
B.
woman cannot learn to use typewriters
C.
all nurses are rich and well-educated women
D.
nursing is a good profession for women
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