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【单选题】
全国教育系统“安全生产月”活动于( )在全国各级各类学校开展。
A.
2016 年5月
B.
2016 年6月
C.
2016 年7月
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参考答案:
举一反三
【简答题】已知函数 f(x)= ax-1 x+1 ,  其中 a∈R . (1)当a=1时,求函数满足f(x)≤1时的x的集合; (2)求a的取值范围,使f(x)在区间(0,+∞)上是单调减函数.
【简答题】已知a∈R,函数f(x)=x|x-a|. (Ⅰ)当a=2时,求使f(x)≥x成立的x的集合; (Ⅱ)求函数y=f(x)在区间[1,2]上的最小值.
【判断题】他汀类降脂药主要降低甘油三酯
A.
正确
B.
错误
【简答题】已知定义在R上的奇函数f(x).当x<0时,f(x)=x 2 +2x. (Ⅰ)求函数f(x)的解析式; (Ⅱ)问:是否存在实数a,b(a≠b),使f(x)在x∈[a,b]时,函数值的集合为 [ 1 b , 1 a ] ?若存在,求出a,b;若不存在,请说明理由.
【简答题】已知a∈R,函数f(x)=x 2 |x-a|, (Ⅰ)当a=2时,求f(x)=x使成立的x的集合; (Ⅱ)求函数y=f(x)在区间[1,2]上的最小值。
【简答题】已知a∈R,函数f(x)=x 2 |x-a|. (Ⅰ) 当a=1时,求使f(x)=x成立的x的集合; (Ⅱ) 判断函数y=f(x)的奇偶性; (Ⅲ)当a>2时,求函数y=f(x)在区间[1,2]上的最小值.
【简答题】已知函数f(x)=x|x 2 -a|,a∈R. (Ⅰ)当a≤0时,求证函数f(x)在(-∞,+∞)上是增函数; (Ⅱ)当a=3时,求函数f(x)在区间[0,b]上的最大值.
【单选题】Finally, they return the()to the people who bought shares in the company.
A.
cost
B.
price
C.
profits
【单选题】Zwick Company bought 80,000 shares of the voting common stock of Handy Corporation in January 2013. In December, Handy announced $200,000 net income for 2013 and declared and paid a cash dividend of $...
A.
$0.
B.
$28,000.
C.
$56,000.
D.
None of the above is correct.
【单选题】A 'trade debtor' of a company can best be described as a person or firm who______.
A.
bought goods from the company on credit and has not yet paid
B.
borrowed money from the company in the form. of a loan
C.
sold goods on credit to the company and has not been paid
D.
made a loan to the company
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