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【单选题】
Once there was a little girl who came to live in an orphanage (孤儿院). As Christmas time was drawing near, all of the other children 11 telling the little girl about the beautiful Christmas tree that would appear in the hall downstairs on Christmas morning. After their usual 12 , each child would be given their only Christmas gift, a small orange. The headmaster of the orphanage was very 13 with the kids. So on Christmas Eve, when he 14 the little girl slipping down the stairs to peek(偷看)at the much-heard-of Christmas tree, he 15 that the little girl would not receive her Christmas orange because she had been so curious as to disobey the rules. The little girl ran back to her room 16 , crying at her terrible fate. The next morning as the other children were going down for breakfast, the little girl stayed in her bed. She couldn’t 17 the thought of seeing the others receive their gift while there would be 18 for her. Later, as the children came back upstairs, the little girl was surprised to be handed a napkin (餐巾). As she carefully opened it, there, to her 19 , was an orange all peeled and sectioned (分瓣). “ How could this be? ” she asked. Then, she realized how each child had taken one section from their orange for her so that she, too , would have a Christmas orange. What an example of the true meaning of Christmas those orphan children showed that morning! How I 20 the world would show the same kind of concern for others, not only at Christmas, but throughout the year! 请在12处填上正确答案()
A.
breakfast
B.
lunch
C.
dinner
D.
break
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【单选题】影响高程放样的主要误差是 ( )。
A.
对中误差
B.
目标偏误差
C.
测角误差
D.
仪器误差
【判断题】胴体劈半工艺、分割方式和分割技艺对肉的保水性也有重要影响。劈半工具不良、劈半或分割技术不高,都会不同程度地破坏肌肉结构,增大肉的汁液损失。
A.
正确
B.
错误
【简答题】3 吨20千克=( )吨 3吨20千克=( )千克
【单选题】下列物质中 , 既能与溴水反应又能与三氯化铁发生显色反应的是 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
甲苯
B.
苄醇
C.
. 苯酚
D.
甘油 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
【简答题】对He-Ne激光器输出的632.8nm的红光来说,其中心频率是4.7×10 14 Hz,频率宽度△γ=1.5×10 9 Hz。问Ne所发出的波长范围为多大?由此,你对一般情况下所说的单色光作何理解?
【单选题】波长为632.8nm He-Ne激光器输出为50mW,其输出模式为单横模多纵模,此激光器为非均匀加宽,多普勒线宽为2000MHz,折射率为1,腔长为30cm。若小信号增益系数的最大值为损耗系数的两倍,求此激光器的纵模数。
A.
2
B.
4
C.
7
D.
11
【单选题】下列哪一个是作用是区别满立减与优惠券的关键 ( )
A.
提高客单价
B.
二次销售
C.
全店铺引流
D.
提高关联营销转化率
【单选题】波长为632.8nm He-Ne激光器输出为50mW,其输出模式为单横模多纵模,此激光器为非均匀加宽,多普勒线宽为1.5GHz,折射率为1,腔长为30cm。如果小信号增益系数的最大值为损耗系数的两倍,此激光器的纵模数为()
A.
1
B.
3
C.
5
D.
7
【单选题】在Excel工作表A4单元格中,如要将原来的日期型数据清除并改成能输入数值型数据,正确的操作为______。
A.
单击A4单元格,选择“编辑”菜单下的“清除”下的“格式”
B.
单击A4单元格,选择“编辑”菜单下的“清除”下的“全部”
C.
单击A4单元格,选择“编辑”菜单下的“清除”下的“内容”
D.
单击A4单元格,选择“编辑”菜单下的“删除”
【单选题】Excel 97中,在工作表的单元格里输入中、英文等数据,单元格的数据类型有______。
A.
文本
B.
文本、数字
C.
文本、数字、逻辑值
D.
文本、数字、逻辑值、出错值
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