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【简答题】
在进行表单验证时, 当填写的文本框信息有错误时, 通常会在文本框后面用红色的特殊字体显示错误信息, 那么这种即时错误信息是在文本框发生了什么事件后产生的:( ) A. onBlur B. onFocus C.onChange D.onClick B. onFocus C. onChange D. onClick
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【简答题】Relationships with the population affected by the project seem to be improving. (signs) Relationships with the population affected by the project __________ .
【简答题】It is hard to imagine that such a small country，the size of Indiana with the population of Alaska，tucked in the Himalaya Mountains，accessible only by two airplanes，is the “Happiest Country’’ in the wo...
【单选题】高速公路隧道应设置不问断照明供电系统。长度大于1000m的其他交通隧道应设置应急照明系统，并保证照明中断时间不超过（ ）s。
A.
0．3
B.
0．5
C.
1．0
D.
1．5
【单选题】按现行规范,符合长度()条件的高速公路隧道应设置应急照明系统,并应采用不间断供电系统。
A.
与长度大小无关
B.
L〉200m
C.
L〉500m
D.
L〉1000m
【单选题】With the population explosion, scientists will have to ____new methods of increasing the world ’ s food supply.
A.
lead to
B.
stick to
C.
carry out
D.
come up with
【简答题】Health geographers also study factors that could make certain individuals or a population more likely to be taken ill with a specific health concern or disease, as compared with the population of anot...
【单选题】With the population explosion, scientists will have to __ new methods of increasing the world’s food supply.
A.
lead to
B.
carry on
C.
come up with
D.
stick to
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