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【单选题】
当电压电流为非关联参考方向时,功率的计算公式是( )
A.
P=UI
B.
P=-UI
C.
P=IR
D.
P=-IR
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举一反三
【判断题】设向量 和 ,则向量 在 上的射影为 。( )
A.
正确
B.
错误
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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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【单选题】What do you call a student in his/her first year at college?
A.
a senior
B.
a sophomore
C.
a freshman
D.
a graduate
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【判断题】招聘面谈前期准备中要注意明确面谈目的,设计面谈问题以及面谈的基本流程
A.
正确
B.
错误
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】已知 ， ，则向量 在 方向上设射影的数量为（   ）
A.
B.
C.
查看完整题目与答案
相关题目：
【判断题】设向量 和 ,则向量 在 上的射影为 。( )
A.
正确
B.
错误
查看完整题目与答案
【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
【单选题】What do you call a student in his/her first year at college?
A.
a senior
B.
a sophomore
C.
a freshman
D.
a graduate
查看完整题目与答案
【判断题】招聘面谈前期准备中要注意明确面谈目的,设计面谈问题以及面谈的基本流程
A.
正确
B.
错误
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】已知 ， ，则向量 在 方向上设射影的数量为（   ）
A.
B.
C.
查看完整题目与答案