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【判断题】
当一个面平行于一个投影面时,必垂直于另外两个投影面。
A.
正确
B.
错误
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参考解析：
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举一反三
【单选题】Fred and Jim did not like each other at first,but ______ they became friends. [     ]
A.
in time
B.
on time
C.
in turn
D.
by turns
查看完整题目与答案
【单选题】设 A、B、C都是n阶方阵,且A可逆,则必成立的是( )
A.
若 AC=BC，则A=B
B.
若 BC=0，则B=0
C.
若 BA=CA，则B=C
D.
若 A -1 B=CA -1 ，则 B=C
查看完整题目与答案
【简答题】阅读理解。 It was Sunday, Jim did not have to go to school. He helped his father in the Garden. After two hours in the garden, He was ti red. He went in the room and took out an ice cream from the fridge. ...
查看完整题目与答案
【单选题】实际工作中的成本开支范围与理论成本包括的内容( )
A.
是有一定差别的
B.
是完全一致的
C.
是完全不同的
D.
是可以相互替代的
查看完整题目与答案
【多选题】若 n 阶方阵 A、B 都可逆,且 AB=BA ,则下列结论正确的是( ).
A.
B.
C.
D.
查看完整题目与答案
【单选题】Jim did not do the stealing himself, ______.
A.
so he can't make money
B.
because he was less intelligent than others
C.
but he made stealing plans and gave others
D.
for he was a foolish
查看完整题目与答案
【单选题】Jim did not like our plan so he countered it with one of his own.
A.
answered
B.
opposed
C.
rejected
D.
replaced
查看完整题目与答案
【单选题】设 、C都是n阶方阵,且A可逆,则必成立的是( )
A.
若AC=BC,则A=B
B.
若BC=0,则B=0
C.
若BA=CA,则B=C
D.
若A -1 B=CA -1 ,则B=C
查看完整题目与答案
【单选题】若A,B都是n阶方阵,且A,B都可逆,则下述错误的是( )
A.
147A
B.
147B
C.
147C
D.
147D
查看完整题目与答案
【单选题】一般说来,实际工作中的实际工作中的成本开支范围 与理论成本包括的内容( )
A.
是有一定差别的
B.
是相互一致的
C.
是不相关的
D.
是可以相互替代的
查看完整题目与答案
相关题目：
【单选题】Fred and Jim did not like each other at first,but ______ they became friends. [     ]
A.
in time
B.
on time
C.
in turn
D.
by turns
查看完整题目与答案
【单选题】设 A、B、C都是n阶方阵,且A可逆,则必成立的是( )
A.
若 AC=BC，则A=B
B.
若 BC=0，则B=0
C.
若 BA=CA，则B=C
D.
若 A -1 B=CA -1 ，则 B=C
查看完整题目与答案
【简答题】阅读理解。 It was Sunday, Jim did not have to go to school. He helped his father in the Garden. After two hours in the garden, He was ti red. He went in the room and took out an ice cream from the fridge. ...
查看完整题目与答案
【单选题】实际工作中的成本开支范围与理论成本包括的内容( )
A.
是有一定差别的
B.
是完全一致的
C.
是完全不同的
D.
是可以相互替代的
查看完整题目与答案
【多选题】若 n 阶方阵 A、B 都可逆,且 AB=BA ,则下列结论正确的是( ).
A.
B.
C.
D.
查看完整题目与答案
【单选题】Jim did not do the stealing himself, ______.
A.
so he can't make money
B.
because he was less intelligent than others
C.
but he made stealing plans and gave others
D.
for he was a foolish
查看完整题目与答案
【单选题】Jim did not like our plan so he countered it with one of his own.
A.
answered
B.
opposed
C.
rejected
D.
replaced
查看完整题目与答案
【单选题】设 、C都是n阶方阵,且A可逆,则必成立的是( )
A.
若AC=BC,则A=B
B.
若BC=0,则B=0
C.
若BA=CA,则B=C
D.
若A -1 B=CA -1 ,则B=C
查看完整题目与答案
【单选题】若A,B都是n阶方阵,且A,B都可逆,则下述错误的是( )
A.
147A
B.
147B
C.
147C
D.
147D
查看完整题目与答案
【单选题】一般说来,实际工作中的实际工作中的成本开支范围 与理论成本包括的内容( )
A.
是有一定差别的
B.
是相互一致的
C.
是不相关的
D.
是可以相互替代的
查看完整题目与答案