皮皮学，免费搜题
登录
搜题
【多选题】
select标签需要使用option标签定义列表的可用选项，它的语法格式如下所示：下面描述正确的是：
A.
其中name属性为列表框或组合框定义名称标识，size属性指定列表框中行的显示数量，如果选项数目大于size值，则会出现垂直滚动条。如果没有定义size属性，或者size属性值为1，则呈现为菜单样式。
B.
multiple属性设置时，允许同时选择多个选项，不设置则只允许选择一个选项。
C.
选项标签 有两个常用属性：selected和value。其中selected属性指定首次显示列表时该选项为选中状态，value属性指定选项的取值。
D.
当选项列表过长时，不便于用户选择选项，可以进行组合处理解决这一问题。 标签可以定义组合选择，使用它对过长的选项进行组合处理，该标签在 标签中直接指定，不允许嵌套。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】(单选题)国务院批准的中国首个以海洋经济为主题的国家战略层面新区是( )。
A.
浦东
B.
舟山
C.
青岛
D.
三亚
查看完整题目与答案
【单选题】听力原文：W1: I know youre all excited about our class project. But before we get started on the design of our mural, lets review some of the technical requirements for murals. What factors do we need to k...
A.
They are preparing for an examination.
B.
They plan to visit some famous murals.
C.
They are helping to design a new building.
D.
They will be creating their own mural.
查看完整题目与答案
【判断题】钢材拉伸试件安装在夹头中，试样的标距部分不得夹入钳口中，试样被夹长部分不小于钳口的二分之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】It is desired that the project________before the end of this month.
A.
will be finished
B.
is to be finished
C.
be finished
D.
is going to be finished
查看完整题目与答案
【单选题】听力原文：W: Haven't I told you to finish this project before 5 o'clock? M: Yes, you have, but there is really too much to do. Has the man finished the project?
A.
Yes.
B.
No.
C.
He would not like to do.
查看完整题目与答案
【判断题】RFID是一种接触式自动识别技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】()是西方公认第一位哲学家、科学家和数学家。
A.
赫拉克利特
B.
泰勒斯
C.
德谟克利特
D.
毕达哥拉斯
查看完整题目与答案
【单选题】They ________ to finish the project before Sunday, but they didn’t make it because of the heavy snow.
A.
succeeded
B.
tried
C.
managed
D.
thought
查看完整题目与答案
【单选题】It was desired that the project ______ before the end of this month.
A.
would be finished
B.
was to be finished
C.
be finished
D.
was going to be finished
查看完整题目与答案
【单选题】Before he left on vacation, he finished the project.
A.
Before left on vacation, he finished the project.
B.
Before leaving on vacation, he finished the project.
C.
Before on vacation, he finished the project.
查看完整题目与答案
相关题目：
【单选题】(单选题)国务院批准的中国首个以海洋经济为主题的国家战略层面新区是( )。
A.
浦东
B.
舟山
C.
青岛
D.
三亚
查看完整题目与答案
【单选题】听力原文：W1: I know youre all excited about our class project. But before we get started on the design of our mural, lets review some of the technical requirements for murals. What factors do we need to k...
A.
They are preparing for an examination.
B.
They plan to visit some famous murals.
C.
They are helping to design a new building.
D.
They will be creating their own mural.
查看完整题目与答案
【判断题】钢材拉伸试件安装在夹头中，试样的标距部分不得夹入钳口中，试样被夹长部分不小于钳口的二分之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】It is desired that the project________before the end of this month.
A.
will be finished
B.
is to be finished
C.
be finished
D.
is going to be finished
查看完整题目与答案
【单选题】听力原文：W: Haven't I told you to finish this project before 5 o'clock? M: Yes, you have, but there is really too much to do. Has the man finished the project?
A.
Yes.
B.
No.
C.
He would not like to do.
查看完整题目与答案
【判断题】RFID是一种接触式自动识别技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】()是西方公认第一位哲学家、科学家和数学家。
A.
赫拉克利特
B.
泰勒斯
C.
德谟克利特
D.
毕达哥拉斯
查看完整题目与答案
【单选题】They ________ to finish the project before Sunday, but they didn’t make it because of the heavy snow.
A.
succeeded
B.
tried
C.
managed
D.
thought
查看完整题目与答案
【单选题】It was desired that the project ______ before the end of this month.
A.
would be finished
B.
was to be finished
C.
be finished
D.
was going to be finished
查看完整题目与答案
【单选题】Before he left on vacation, he finished the project.
A.
Before left on vacation, he finished the project.
B.
Before leaving on vacation, he finished the project.
C.
Before on vacation, he finished the project.
查看完整题目与答案