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【单选题】
When students speak English, don’t try to correct . Let them learn to correct .A.
them, themselves
B.
themselves, them
C.
them, them
D.
themselves ,themselves
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】运算符两侧操作数的数据类型必须 。
【判断题】A goal of efficiency is to minimize output costs while maximizing input costs.
A.
正确
B.
错误
【单选题】关于C语言的运算符和表达式,以下错误的说法是________。
A.
在C语言算术表达式的书写中,运算符两侧的操作数类型必须一致
B.
条件运算符是C语言中唯一的三元运算符
C.
相同数据类型的元素进行算术运算(+、-、*、/)得到结果还保持原操作数的数据类型
D.
C语言中表达式一定有值
【单选题】Decreases in input costs and the longer the length of time since a price change will tend to:
A.
. increase the price elasticity of supply.
B.
. decrease price elasticity of supply.
C.
. have no impact on the price elasticity of supply.
D.
. increase price elasticity of supply with decreases in input costs, but decrease price elasticity of supply with length of time.
【单选题】肩井穴位于:
A.
第七颈椎棘突与肩峰最外端连线的中点
B.
第六颈椎棘突与肩峰最外端连线的中点
C.
肩峰与肱骨大结节之间凹陷处
D.
肩关节外展时于肩峰后下方呈现凹陷处
E.
在肩关节后下方，肩臂内收时，腋后纹头上1寸
【单选题】Economic costs of an input include
A.
only implicit costs.
B.
only explicit costs.
C.
both implicit and explicit costs.
D.
whatever management wishes to report to the shareholders.
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