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【简答题】
设有两个修理工人,其责任是保证5台机器能正常运行,每台机器平均损坏率为每小时一次。这两个工人修复一台机器的平均时间0.25h。求:(1)等待修理的机器平均数;(2)机器在系统中的平均逗留时间。
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举一反三
【单选题】The sale manager be asked to draw up sale ______ for the next three year.
A.
profession
B.
projection
C.
proclivity
D.
proficient
【单选题】The followings are responsibilities of a sale manager except .
A.
researching sales statistics
B.
being responsible for the board of directors
C.
overseeing all marketing, advertising and promotional activities
D.
evaluating customer research, market conditions, competitor data
【简答题】You are the manager of an American pension fund and decide, on January 5, to buy 10,000 shares of British Airways (BA) listed in London. You sell them on February 5. Here are the quotes that you can u...
【多选题】下面关于 n 与 l 两个声母发音的描述正确的是
A.
这两个声母发音部位不同。
B.
这两个声母的发音方法不同。
C.
发声母 n 时气流从鼻腔出来,发声母 l 时气流从口腔出来。
D.
n 声母是鼻音, l 声母是边音。
【判断题】想象 可以反映世界上根本不存在的客观事物,所以想象不是人脑对客观事物的反映 。
A.
正确
B.
错误
【单选题】在数字签名技术中,一般是使用信息()进行加密
A.
接收方的公钥
B.
发送方的公钥
C.
接收方的私钥
D.
发送方的私钥
【单选题】—Why was Mr. Wang _____ the manager of the department? —Because he did well in sale. [     ]
A.
appointed to be
B.
made as
C.
sent to
D.
chosen to
【简答题】Item 2: ReportsThe CEO asked for reports from those present. The Sales Manager reported that prices ___________(cut). The Marketing Manager confirmed that the advertising budget __________(increase...
【判断题】想象可以反映世界上根本不存在的客观事物,所以想象不是人脑对客观事物的反映。你认为这种观点
A.
正确
B.
错误
【单选题】The followings are responsibilities of a sale manager except
A.
researches sales statistics
B.
is responsible for the board of directors
C.
oversees all marketing, advertising and promotional activities
D.
evaluates customer research, market conditions, competitor data
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