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【简答题】
已知函数 f(x)= 1 3 x 3 - x 2 -3x+ 4 3 ,直线l 1 :9x+2y+c=0.若当x∈[-2,2]时,函数y=f(x)的图象恒在直线l的下方,则c的取值范围是______
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举一反三
【单选题】外源化学物的主要吸收途径有( )
A.
经消化道吸收
B.
注射方式
C.
经呼吸道吸收
D.
经皮肤吸收
【单选题】呼吸道作为环境污染物主要吸收途径的理由,哪项描述是错误的
A.
肺泡的总表观面积很大
B.
肺泡壁很薄
C.
肺泡间毛细血管丰富
D.
吸收的污染物,可不经过肝的转化
E.
气体及蒸气状态污染物多以主动转运的方式进入血流
【单选题】A fiscal action that is triggered by the state of the economy is called
A.
the government expenditure multiplier.
B.
discretionary fiscal policy.
C.
automatic fiscal policy.
D.
generational fiscal policy.
【单选题】下列哪项不是麻疹前驱期的表现()
A.
发热
B.
上呼吸道卡他症状
C.
眼结膜炎表现
D.
麻疹黏膜斑
E.
皮肤糠麸脱屑
【单选题】下列哪项不是麻疹前驱期的表现
A.
发热
B.
上呼吸道卡他疗状
C.
结膜炎
D.
麻疹粘膜斑
E.
皮肤糠麸脱屑
【判断题】焊缝射线探伤直观,底片便于保存备查。但射线探伤成本高,效率低。
A.
正确
B.
错误
【单选题】A fall in income that results in a decrease in tax revenues is an example of ( ).
A.
automatic fiscal policy
B.
needs-tested tax programs
C.
a recession
D.
discretionary fiscal policy
【单选题】呼吸道是环境污染物主要吸收途径的原因,哪项描述是错误的(    )
A.
肺泡的总表观面积很大    
B.
肺泡壁很薄
C.
肺泡间毛细血管丰富      
D.
吸收的污染物,可不经过肝的转化
E.
气体及蒸汽状态污染物多以主动转运的方式进入血流
【单选题】Which of the following is the term used to describe the offsetting of the effects of intervention in the foreign exchange market on the domestic money supply?______.
A.
Daily intervention
B.
Sterilization
C.
Discretionary monetary policy
D.
Discretionary fiscal policy
【单选题】During the gold standard era, central bankers agreed to react positively to international gold flows so as to reinforce the automatic adjustment mechanism. Which of the following best represents the a...
A.
Income-adjustment mechanism
B.
Price-adjustment mechanism
C.
Rules of the game
D.
Discretionary fiscal policy
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