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【单选题】
某公司生产一种化工产品甲,进一步加工可以生产高级化工产品乙。甲乙两种产品在市场的售价分别是50元每千克,120元每千克,但乙的生产每年需要追加固定成本2万元,变动成本为10元每千克。若每千克甲产品可加工0.6千克乙产品,则该公司应该( )A.
进一步加工生产产品乙
B.
当产品假的年销售数量超过1250千克（或乙超过750千克）时，将产品甲进一步加工成产品乙
C.
将产品甲出售，不应进一步加工。
D.
两种方案任选其一
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举一反三
【单选题】如下对于字符串拼接有误的是（）
A.
“life is short,””you need python.”
B.
“life is short,”+”you need python.”
C.
“life is short,” 2*”you need python.”
D.
“life is short,”+2*”you need python.”
【单选题】__________ seeing the damage he had done，the child felt ashamed．
A.
Bv
B.
On
C.
At
D.
For
【单选题】I don't know why the child started to cry, but she______by the dog.
A.
might have been frightened
B.
must have been frightened
C.
would have been frightened
D.
should have been frightened
【单选题】如下对于字符串拼接有误的是( )
A.
“Life is short，”“you need Python”
B.
“Life is short，”+“you need Python”
C.
“Life is short，”2*“you need Python”
D.
“Life is short，”+2*“you need Python”
【简答题】我想要申请去前台交叉培训。
【单选题】______ seeing the damage he had done, the child felt ashamed.
A.
By
B.
On
C.
At
D.
For
【单选题】Linda felt someone ________ on her way home from work yesterday evening, and therefore she was frightened and looked back from time to time.
A.
followed
B.
would follow
C.
had followed
D.
was following
【简答题】________ seeing the damage he had done, the child felt ashamed. A) By B) On C) At D) For
【单选题】在字符串模板及其拼接中,下面那些描述是错误的?
A.
符号$后面跟变量名，系统会自动匹配最长的变量名。
B.
下面这行代码，输出的是变量test_origin_trim的值，而不是test的值： println( " $test_origin_trim" )
C.
在Kotlin格式化代码中，美元符号$属于特殊字符，因此,在很多情况下，不能直接打印它，必须经过转义才可以打印。
D.
有如下代码;println( "美元金额为 ${'$'}$sorigin")，该语句输出的是：美元金额为：'$'$sorigin
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