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问题 单项选择题

查看开关电源参数设置是否正常，对于-48V系统，要求蓄电池的均充电压（）浮充电压52.8V、53.5V（应优先考虑蓄电池的浮充电压来设置）。

A、53.5V

B、56.4V

C、52.8V

D、56V

答案

参考答案：B

写句子

照样子缩句子。

   例：深蓝的天空中挂着一轮金黄的圆月。    

          天空中挂着一轮金黄的圆月。    

          天空中挂着圆月。    

    宽阔的公路上奔驰着一辆崭新的汽车。

                                                                                                                                  

                                                                                                                                  

例：他们胸前的红领巾在阳光下格外鲜艳。  

       红领巾在阳光下格外鲜艳。  

       红领巾格外鲜艳。

   方大伯种的青菜在露水里格外鲜嫩。

                                                                                                                                 

                                                                                                                                 

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选择题

Lily and Linda look       , but they are in        families.

A．the same, different

B．different, the same

C．same, the different
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