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问题 单项选择题

电脑的CD-ROM里面放了一张CD唱片，但是喇叭里面没有音乐的声音，工程师确定了喇叭是开着的，也确定电脑可以放出声音，CD-ROM的灯也是亮着的。那么这时工程师应该检测什么？（）

A.检测连接CD-ROM和声卡的连线

B.CD-ROM和主板的数据线

C.声卡是否插对了主板的插槽

D.放CD音乐的程序是否设置正确

答案

参考答案：A

单项选择题

Air France SA said Monday that its second-quarter net profit fell 35 percent to €57 million ($57.4 million), but sales were steady and operating profit surged.Earnings before interest and tax, a measure of operating income, gained 86 percent to €141 million as fuel costs fell and cargo traffic rose. Air France has been hurt less than rivals such as British Airways PLC and Lufthansa AG by the slowdown on North Atlantic routes following the war on Iraq in 2003 because it has fewer flights in that market.Net income fell as the airline paid deferred taxes that came due. Sales rose 0.9 percent to €3.2 billion. The carrier lost about €80 million in revenue because of a four-day strike by pilots in September. An accord was reached tying future pay increases to inflation. The carrier said that first-half fuel costs fell 15 percent to €680 million. Cargo traffic rose 11 percent in the second quarter, while passenger traffic rose 1.1 percent. The airline’’s shares gained 87 cents, or 7.7 percent, to close at €12.11.Separately, Air France and Alitalia SpA agreed to buy 2 percent stakes in each other as Europe’’s second- and sixth-largest airlines deepen their partnership.

Why did Air France’s net income fall despite rising sales

A．Because it had to pay deferred taxes that came due.

B．Because the French market was shrinking.

C．Because of a four-day strike by pilots in September.

D．Because the Iraqi war had reduced Atlantic flights.
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多项选择题

收费系统测试的内容主要涉及（）等。

A.数据处理、统计报表及打印记录测试

B.闭路电视监视功能测试

C.告警及异常处理功能测试

D.安全性及保密性测试
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