窗体的左右两端各有1条直线,名称分别为Line1、Line2;名称为Shape1的圆

题型:单项选择题

问题:

窗体的左右两端各有1条直线,名称分别为Line1、Line2;名称为Shape1的圆靠在左边的Line1直线上(见图);另有1个名称为Timer1的计时器控件,其Enabled属性值是True。要求程序运行后,圆每秒向右移动100,当圆遇到 Line2时则停止移动。

为实现上述功能,某人把计时器的Interval属性设置为1000,并编写了如下

程序:

Private SubTimer1_Timer()

For k=Line1.X1 To Line2.X1 Step 100

If Shape1.Left+Shape1.Width<Line2.X1 Then

Shape1.Left=Shape1.Left+100

End If

Next k

End Sub

运行程序时发现圆立即移动到了右边的直线处,与题目要求的移动方式不符。为得到与题目要求相符的结果,下面修改方案中正确的是

A、把计时器的Interval属性设置为1

B、把For k=Line1.X1 To Line2.X1 Step 100和Next k两行删除

C、把For k=Line1.X1 To Line2.X1 Step 100改为For k=Line2.X1 To Line1.X1 Step 100

D、把If Shape1.Left+Shape1.Width<Line2.X1 Then改为If Shape1.Left<Line2.X1 Then

考点:计算机等级考试VISUALBASIC全国计算机等级考试二级VISUALBASIC真题2009年9月
题型:单项选择题

流行性感冒是常见传染病,是病原体侵染人体呼吸道引起的。症状是发热、头痛、咳嗽、打喷嚏、全身酸痛等。一旦出现流行性感冒病人,在人口密集的地方极易传播,在短时间内迅速蔓延。分析回答:

(1)流行性感冒能在人群中传播,它有具有________和_________等特点。试举一例说明流行性感冒的可能传播途径__________。

(2)从传染病的预防措施看,医生对流行性感冒患者进行打针、吃药等具体治疗属于_________;健康人应加强体育锻炼,提高自身免疫力属于___________。 

(3)从切断传播途径的角度,制定2条在教室内预防传染病的具体措施____________。

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血清肌酸激酶水平开始升高的时间为急性心肌梗死后

A.1~3h

B.4~6h

C.7~9h

D.10~12h

E.13~24h

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Compared with IBM, Microsoft is a mere young company. Founded in 1975, it rose swiftly to dominate the world of personal computing with its Windows operating system and Office suite of word-processing and other productivity tools. But the company is now showing some worrying signs of middle-age fatigue. In particular, it is struggling to find a growth strategy that will enthuse disappointed shareholders.

Complaint are understandable. Since Steve Ballmer took over from Bill Gates as chief executive in 2000, Microsoft’s share price has decreased and the company has lost its reputation as a tech trend-setter. It has been left behind in hot areas such as search and social networking by younger companies, some of which love to thumb their noses at their older rival. Eric Schmidt, the executive chairman of Google, recently proclaimed that leadership in the tech world had passed from Microsoft and others to a "Gang of Four" fast-growing, consumer-oriented businesses: Google, Apple, Amazon and Facebook.

Few would object to that. The question is: what,if anything, can Microsoft do to change it In at least some respects, the company appears to be suffering from similar ailments to those that laid IBM low before Lou Gerstner was hired in 1993 to get it back on its feet. These include arrogance bred of dominance of a particular area-mainframe computers at IBM, personal computers at Microsoft—and internal fiefs that hamper swift change.

As IBM’s experience shows, recovery in the tech world is possible. And some observers see encouraging signs of progress at Microsoft. Sarah Rotman Epps of Forrester, a research firm, reckons that Windows 8, a forthcoming version of Microsoft’s operating system, could be a serious competitor to Google’s Android on tablet computers if the company can get it to market next year.Microsoft is also in far better shape financially than IBM was at its lowest point, so it can afford to splash out on acquisitions such as its recent $8.5 billion purchase of Skype, an internet-phone and video-calling service.

That bet and an alliance with Nokia in mobile phones show that Microsoft is trying to bulk up in promising areas. Yet sceptics worry that such initiatives are not the product of an comprehensive strategic vision, but are instead temporary moves designed to calm critics who fear Microsoft is drifting downwards. David Einhorn, a prominent hedge-fund manager whose fund holds shares in Microsoft, has publicly called for a change at the top of the firm, arguing that Mr Ballmer is "stuck in the past". So far, the company’s board, chaired by Mr Gates, has backed its chief executive. But if IBM’s history is a guide, Microsoft may yet end up jettisoning its leader.

The word "jettisoning" (Last line, Paragraph 5) probably means()

A. abandoning

B. criticizing

C. convincing

D. coaching

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磨煤机运行时轴承温度的工艺指标是()

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