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【多选题】
下列关于回收站的描述正确的是( )。A.
回收站是硬盘上的一个文件夹
B.
删除的文件放入回收站中
C.
回收站中的文件不可还原
D.
回收站的大小可以调整
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】设a为实数，函数f（x）=2x 2 +（x-a）|x-a|， （1）若f（0）≥1，求a的取值范围； （2）求f（x）的最小值； （3）设函数h（x）=f（x），x∈（a，+∞），直接写出（不需给出演算步骤）不等式h（x）≥1的解集。
【单选题】During a business lunch it's important to ______.
A.
make a deal with the client
B.
order nice, expensive food
C.
be a good listener
D.
inquire after the client's health
【简答题】In order to deal (effective) ______ with the frequent railroad accidents, a special committee has been set up.
【单选题】In order to keep the balance of ecosystem, every possible means _______to deal with the problems of the over-exploiting of natural resources.
A.
has tried
B.
has been tried
C.
have taken
D.
have been taken
【单选题】Daring a business lunch it' s important to______.
A.
make a deal with the client
B.
order nice, expensive food
C.
be a good listener
D.
inquire after the client' s health
【简答题】设函数f（x）= 1 3 x 3 - a+1 2 x 2 +ax． （Ⅰ）函数f（x）在（11，2012）内单调递减，求a范围； （Ⅱ）若实数a满足1＜a≤2，函数g（x）=4x 3 +3bx 2 -6（b+2）x（b∈R）的极小值点与f（x）的极小值点相同，求证：g（x）的极大值小于等于10．
【单选题】According to Xiao Wei, the first thing Shanghai has to deal with is human capital in order to keep its leading position in development.
A.
Y
B.
N
C.
NG
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