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【简答题】
8051单片机中，片内有（ ）字节的数据存储器。
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皮皮学刷刷变学霸
举一反三
【简答题】questions 16 to 18 are based on the first passage
【单选题】Questions 16 to 18 are based on the following passage.
A.
Their physical health improves.
B.
They are not productive.
C.
They suffer from depression.
D.
They have more time for friends and family.
【单选题】在windows7中要更改桌面背景图案应通过______。
A.
在“桌面”右键单击，选择小工具
B.
在“资源管理器”的“工具”菜单中选择“文件夹选项”。
C.
在“计算机”的“文件”菜单中选择“属性”
D.
在“控制面板“中双击”个性化“图标
【单选题】Questions 16 to 18 are based on the following passage.
A.
Because friends and family are jealous.
B.
Because they have less time for friends and family.
C.
Because friends stop inviting you to social events.
D.
Because you don’t answer your phone.
【单选题】Questions 16 to 18 are based on the following passage. 16.
A.
A 13-year-old Ukrainian girl.
B.
A 13-year-old Ukrainian boy.
C.
A 15-year-old Ukrainian boy.
D.
A 15-year-old Ukrainian girl.
【简答题】必需脂肪酸中的亚油酸的碳原子数为 个,不饱合键数目为 个。
【单选题】Questions 16 to 18 are based on the following passage.
A.
Colors that match your unique features and character.
B.
Colors that they like.
C.
Colors that you have never used.
D.
Colors that are in style.
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