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【单选题】
一般而言,电视屏幕上每行文字不应超过A.
10个字
B.
20个字
C.
30个字
D.
没有限制
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列关于字段属性的默认值的设置说法，错误的是（ ）。
A.
默认值类型必须与字段的数据类型相匹配
B.
在默认值设置时，输入文本不需要加引号，系统会自动加上引号
C.
设置默认值后，用户只能使用默认值
D.
可以使用ACCess的表达式来定义默认值
【单选题】Choose the best summary of the passage.
A.
1 Churchill became Prime Minister in 1940 because King George VI believed that he had the confidence of the nation. Churchill won the war, but lost the general election afterwards.
B.
2 Churchill had a successful military career. He became Prime Minister because he won the most important battle in Britain’s history. He is considered the greatest Briton because his personality sums up the nation.
C.
3 Churchill came from a famous family and was a soldier and politician. When Churchill became Prime Minister in 1940, Britain was at war. Churchill made speeches that inspired the nation, and led the country to victory. Although he was considered a great military leader, Churchill lost the general election after the war.
【简答题】接触网工工作的电压等级是()kV。
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