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【判断题】
圆柱表面的表面结构要求只需标注一次即可。A.
正确
B.
错误
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参考解析：
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【单选题】在平面直角坐标系xOy中，点P的坐标为（-1，1），若取原点O为极点，x轴正半轴为极轴，建立极坐标系，则在下列选项中，不是点P极坐标的是（ ）
A.
（ ）
B.
（ ）
C.
（ ）
D.
（ ）
【单选题】在平面直角坐标系xOy中，点P的坐标为（-1，1），若取原点O为极点，x轴正半轴为极轴，建立极坐标系，则在下列选项中，不是点P极坐标的是（ ）
A.
（ 2 ， 3π 4 ）
B.
（ 2 ，- 5π 4 ）
C.
（ 2 ， 11π 4 ）
D.
（ 2 ，- π 4 ）
【单选题】Our teacher lives in the house ____ door faces to the north.
A.
which
B.
his
C.
that
D.
whose
【单选题】When is Black Friday?
A.
One day after Thanksgiving.
B.
Two days after Thanksgiving
C.
Three days after Thanksgiving.
D.
Four days after Thanksgiving
【简答题】When is Black Friday of 2020?写法同上
【简答题】Black Friday Black Friday is the Friday following Thanksgiving in the U.S. On this day, the Christmas shopping season begins and large stores all over the US have sales. Recently, Black Friday has bee...
【单选题】-- Our English teacher tells us that ______ grammar is a good way to learn English. --And our teacher says _____ also helpful to sing English songs.
A.
study, that was
B.
is studying, it’s
C.
studying, it’s
D.
studied, that was
【简答题】Black Friday Black Friday is the Friday following Thanksgiving in the US. On this day,the Christmas shopping season begins and large stores all over the US have sales. Recently,Black Friday has been t...
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