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(B) Suppose a key man in your firm had just met with a terrible accident.The doctor tell you that this man upon whom you depend for directing sales, checking your books or for performing some other important roles, will be laid up for months, You’d have to replace him, wouldn’t you? And probably at a pay about equal to his ? Then you’d be faced with double paying for one job because stopping the pay of an injured man would simply be out of the question. You can prevent this kind of unproductive outgo on your payroll by providing your key man with the protection of Travelers Business Accident Insurance! This insurance provides total medical expense and a weekly income in case a key man is disabled for some time.Should the disability prove everlasting, an income for life is certainty.Why not make out a list of your key men now? Then get together with Travelers Insurance Company, and let us tell you how little it costs to apply this much needed protection to your business. Write and we'll serve you! 59.The above is most probably________. A.a report  B.a letter  C.an announcement  D.an advertisement 60.Whom might the writing be mainly for? A.An important person in a firm.    B.An employee of a firm. C.The boss of a company.          D.Readers of a newspaper. 61.Why would the pay be doubled? A.Because two persons are doing one job of the same. B.Because the important job is worth double pay. C.Because it is necessary that the injured person should be paid. D.Because the double pay is for two persons. 62.Travelers Insurance Company ________ for a person insured. A.will pay for all the cost of treatment B.will pay the weekly income or even that of lifetime C.won’t get much from the firm D.will provide everlasting pension as well as medical expense
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【单选题】学校对学生进行德育的重要而又特殊的途径是____
A.
社会实践活动
B.
班主任工作
C.
课外校外教育
D.
各科教学
【单选题】下列关于E-R模型的叙述中,哪一条是不正确的?
A.
在E-R图中,实体类型用矩形表示,属性用椭圆形表示,联系类型用菱形表示
B.
实体类型之间的联系通常可以分为1∶1,1∶n和m∶n三类
C.
1∶1联系是1∶n联系的特例,1∶n联系是m∶n联系的特例
D.
联系只能存在于两个实体类型之间
【单选题】在E-R模型中,用图形( )表示实体的属性。
A.
梯形
B.
矩形
C.
椭圆
D.
菱形
【单选题】质量为 m 的小球在水平面上作速率为 v 的匀速圆周运动,则小球在经过1/4圆周时,动量的改变量为()
A.
0
B.
2mv
C.
mv
D.
mv
【单选题】学校对学生进行德育的一个重要而又特殊的途径是()
A.
课外、校外活动
B.
社会实践活动
C.
教学
D.
班主任工作
【单选题】绳的一端系一质量为 m 的小球 , 在光滑的水平桌面上作匀速圆周运动 . 若从桌面中心孔向下拉绳子 , 则小球的
A.
角动量不变
B.
角动量增加
C.
动量不变
D.
动量减少
【多选题】金钥匙的导出格式为
A.
WORD
B.
HTML
C.
PDF
D.
EXCEL
【单选题】长为 L 的绳子一端系一质量为 m 的小球,以另一端为圆心,使小球在光滑水平面上做匀速圆周运动。当角速度超过ω时,绳子就要断裂。若用同样长的这样两股绳子系住小球 m ,使它在水平面内作匀速圆周运动,则绳子不断裂的最大角速度应为
A.
ω
B.
4 ω
C.
ω
D.
ω
【单选题】检影眼光不常用工作距离是:()
A.
1m
B.
0.50m
C.
0.67m
D.
0.30m
【判断题】学校对学生进行德育的重要而又特殊的教育途径是班主任工作。()
A.
正确
B.
错误
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