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【单选题】
建立计算机网络最主要的目的是( )。
A.
传输数字信息快捷
B.
资源共享
C.
网络距离短
D.
远程登录
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【单选题】In America, every student in his or her second year of high school is required to take a class in driver's education. The course is divided up into two parts: class time for learning laws and regulati...
A.
is considered as part of the advanced education
B.
is given to anyone wanting to get a driver's license
C.
is carried on after students graduate from high school
D.
is offered to all the students of Grade 2 in high school
查看完整题目与答案
【单选题】Passage Five In America, every student in his or her second year of high school is required to take a class in driver's education. The course is divided up into two parts: class time for learning laws...
A.
is considered as part of the advanced education
B.
is given to anyone wanting to get a driver's license
C.
is carried on after students graduate from high school
D.
is offered to all the students of Grade 2 in high school
查看完整题目与答案
【单选题】设在直角坐标系{O;i,j,k}下,向量a=i+2j-3k,则向量a在向量i上的射影(投影)向量为( )。
A.
1
B.
i
C.
2j
D.
-3k
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【多选题】风险的不确定性是指
A.
风险何时发生不确定
B.
风险发生的原因不确定
C.
风险发生后的损失不确定
D.
风险是否发生不确定
查看完整题目与答案
【单选题】设在直角坐标系{O;i,j,k}下,向量a=i+2j-3k,则向量a在向量i上的射影(投影)为( )。
A.
1
B.
i
C.
2
D.
-3
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【简答题】a student who is in his or her first year at a high school or college
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【简答题】设 e 1 ， e 2 为单位向量．且 e 1 、 e 2 的夹角为 π 3 ，若 a = e 1 +3 e 2 ， b =2 e 1 ，则向量 a 在 b 方向上的射影为______．
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【简答题】改错：Three passions have governed my lifeThree passions have governed my life: the longing for love, the search into knowledge, and the unbearable __1__pity for the suffering of mankind.I have sought of...
查看完整题目与答案
【单选题】A student buries his/her head reading in a library or doing researches in a laboratory all day long may turn out to be nobody but a book nerd. Likewise, a student only cares about wandering around the...
A.
举例论证
B.
对比论证
C.
因果论证
D.
类比论证
查看完整题目与答案
【单选题】在坐标平面上直线l的方向向量 e =(- 4 5 ， 3 5 ) ，点O（0，0），A（1，-2）在l上的正射影分别为O 1 、A 1 ，设 O 1 A 1 =λ e ，则实数λ=（　　）
A.
2
B.
-2
C.
11 5
D.
- 11 5
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相关题目：
【单选题】In America, every student in his or her second year of high school is required to take a class in driver's education. The course is divided up into two parts: class time for learning laws and regulati...
A.
is considered as part of the advanced education
B.
is given to anyone wanting to get a driver's license
C.
is carried on after students graduate from high school
D.
is offered to all the students of Grade 2 in high school
查看完整题目与答案
【单选题】Passage Five In America, every student in his or her second year of high school is required to take a class in driver's education. The course is divided up into two parts: class time for learning laws...
A.
is considered as part of the advanced education
B.
is given to anyone wanting to get a driver's license
C.
is carried on after students graduate from high school
D.
is offered to all the students of Grade 2 in high school
查看完整题目与答案
【单选题】设在直角坐标系{O;i,j,k}下,向量a=i+2j-3k,则向量a在向量i上的射影(投影)向量为( )。
A.
1
B.
i
C.
2j
D.
-3k
查看完整题目与答案
【多选题】风险的不确定性是指
A.
风险何时发生不确定
B.
风险发生的原因不确定
C.
风险发生后的损失不确定
D.
风险是否发生不确定
查看完整题目与答案
【单选题】设在直角坐标系{O;i,j,k}下,向量a=i+2j-3k,则向量a在向量i上的射影(投影)为( )。
A.
1
B.
i
C.
2
D.
-3
查看完整题目与答案
【简答题】a student who is in his or her first year at a high school or college
查看完整题目与答案
【简答题】设 e 1 ， e 2 为单位向量．且 e 1 、 e 2 的夹角为 π 3 ，若 a = e 1 +3 e 2 ， b =2 e 1 ，则向量 a 在 b 方向上的射影为______．
查看完整题目与答案
【简答题】改错：Three passions have governed my lifeThree passions have governed my life: the longing for love, the search into knowledge, and the unbearable __1__pity for the suffering of mankind.I have sought of...
查看完整题目与答案
【单选题】A student buries his/her head reading in a library or doing researches in a laboratory all day long may turn out to be nobody but a book nerd. Likewise, a student only cares about wandering around the...
A.
举例论证
B.
对比论证
C.
因果论证
D.
类比论证
查看完整题目与答案
【单选题】在坐标平面上直线l的方向向量 e =(- 4 5 ， 3 5 ) ，点O（0，0），A（1，-2）在l上的正射影分别为O 1 、A 1 ，设 O 1 A 1 =λ e ，则实数λ=（　　）
A.
2
B.
-2
C.
11 5
D.
- 11 5
查看完整题目与答案