题目内容
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[单选题]
setTimeout（"alert（'welcome');",1000);这段代码的意思是（)。
A.等待1000秒后，再弹出一个对话框
B.等待1秒钟后弹出一个对话框
C.每隔一秒钟弹出一个对话框
D.语句报错,语法有问题
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.等待1000秒后，再弹出一个对话框
B.等待1秒钟后弹出一个对话框
C.每隔一秒钟弹出一个对话框
D.语句报错,语法有问题
如果结果不匹配，请 联系老师 获取答案
更多“setTimeout("alert('welcome');"…”相关的问题
Which of the following is the best title for this text？
A．The Middle Class on the Alert
B．The Middle Class on the Cliff
C．The Middle Class in Conflict
D．The Middle Class in Ruins
A.alert日志文件
B.control file
C.redo log
D.undo log
1. Do not wear a money belt. This makes you an instant target.
2. Cameras of all kinds are a favorite with snatchers. Feel free to use them within the
Starehe Campus and the hotel grounds but not in the streets.
3. Ladies handbags are also a regular snatch. Avoid carrying one, and if you must, be alert and hold on to it tightly.
4. Jewellery and even glasses with valuable frames are also often targeted. Bear this in mind.
5. When in a vehicle keep the doors always locked, and the windows only slightly open --especially at traffic lights, junctions and in slow moving traffic.
6. Beware of street children, their begging often quickly transforms into something more unpleasant.
7. Stay with the main party all the time, and avoid wandering off on your own.
8. Finally, the best defence is to be alert at all times and conscious of your environment.
Should you have any problem, query or need help at any hour of the day or night call any of the following and they will do their best for you:
OFFICE FIXED HOME FIXED Mobile Phone
1 KENNEDY HONGO 763856/761221 763182 0733 761294
2 FRED OKONO 761221 764988 0733 604490
3 EDWIN OTIENO 761221 761642/763011 072 701279
This selection must be delivered by ______.
A．the Nairobi city government
B．the police of the Nairobi Airport
C．the organizer of the seminar
D．Kennedy Hongo, a detective
It is sometimes assumed that personal interviewing is the most accurate of all survey research techniques. Although personal interviewing may be accurate in many cases, human errors may prevent a researcher from obtaining valid results. Questions perceived by the interviewee as an invasion of privacy or threatening in any way will probably produce false or partially true answers. Also, since the interviewer must interpret the respondent's statements, a certain amount of information lose results even though the respondent may be answering truthfully.
In spite of the problems, at least two major advantages are provided by this research technique. First, the alert interviewer can generally tell if the respondent is being truthful or if he or she is giving superficial or untrue responses. Second, the interviewer can rephrase questions, give more explanation, or probe more deeply if the initial questions do not produce the information desired. As a result, the information gleaned should be more accurate than that provided by interviews where no one is present to clarify questions or to interpret answers.
It can be concluded from the passage that when all the people to be interviewed are located in a relatively big geographical area______.
A．personal interviewing is most effective
B．personal interviewing is economically impractical
C．personal interviewing is the only technique to get information
D．telephone interviewing may not be used
