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【简答题】
已知函数 f(x)= 2-x x+1 ； （1）证明：函数f（x）在（-1，+∞）上为减函数； （2）是否存在负数x 0 ，使得 f( x 0 )= 3 x 0 成立，若存在求出x 0 ；若不存在，请说明理由．
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皮皮学刷刷变学霸
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【单选题】Fred liked fish very much, and when he had enough money ,he bought some in the market, and took it home ,but when his wife saw the fish, she always said to herself, 'Good! Now I will invite my friends...
A.
his home
B.
the market
C.
his office
【单选题】Fred, who had expected how it would go with his daughter, had a great worry ______ his mind.
A.
in
B.
on
C.
with
D.
at
【单选题】根据国家统一的会计制度，会计核算软件应当具有的初始化功能包括（ ）。
A.
选择核算软件的输出文字
B.
选择备份数据的输出位置
C.
选择会计核算方法
D.
选择明细账的格式
【单选题】Fred,who had expected how it would go with his
A.
25. Fred,who had expected how it would go with hisdaughter,had a great worry________his mind. ( 湖南 ) A.on
B.
in
C.
with
D.
at
【单选题】根据国家统一的会计制度，会计制度核算软件应当按照国家统一的会计制度规定的内容和格式打印输出（）
A.
操作人员名单
B.
操作权限分配情况
C.
会计原始凭证
D.
机内原始凭证
【简答题】根据国家统一的会计制度，会计核算软件应当能对（ ）进行正确性检验。
【简答题】Fred, who had expected how it would go with his daughter, had a great worry______ his mind. A. on S. in C. with D. at
【简答题】Fred, who had expected how it would go with his daughter, had a great worry _____ his mind. A. on B. in C. with D. at
【单选题】根据国家统一的会计制度，会计核算软件应当具有（ ）打印输出机内记账凭证的功能。
A.
按照国家统一的制度规定的内容和格式
B.
按照国家统一的会计制度规定的内容
C.
按照国家统一的会计制度规定的格式
D.
按照单位管理要求规定的内容和格式
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