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【单选题】
在空间直角坐标系中，下列结论错误的是A.
表示双曲抛物面
B.
表示圆
C.
表示锥面
D.
表示双曲面
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【单选题】在一个工作表中,利用记录单删除记录与用删除行命令记录不同之处是,用记录单删除记录,( )。
A.
不仅删除数据清单中该记录的所有单元格,而且删除数据清单之外的单元格;用删除行命令时,仅删除数据清单中该行的记录的所有单元格,数据清单之外的单元格不受影响
B.
仅删除数据清单外该记录的所有单元格,数据清单中的单元格不受影响;用删除行命令时,该行所有单元格全被删除
C.
仅删除数据清单中该记录的所有单元格,数据清单之外的单元格不受影响;用删除行命令时,该行所有单元格全被删除
D.
记录所在行的所有单元格全被删除;用删除行命令时,仅删除数据清单中该行的记录的所有单元格,数据清单之外的单元格不受影响
【单选题】The goods shipped already if your L/C had arrived in time.A. would be B. must have been C. had been D. would have been
A.
woud be
B.
must have been
C.
had been
D.
would have been
【单选题】下列关于细胞膜物质转运的叙述 哪一项 是错误的
A.
O 2 和 CO 2 通过肺泡膜是易化扩散
B.
大分子蛋白质进入细胞的方式是入胞
C.
Na ＋ 由细胞外进入细胞内是易化扩散
D.
葡萄糖可经易化扩散进入细胞
E.
Ca 2 ＋ 由胞浆回收入肌浆网是主动转运
【单选题】If there were no subjunctive mood, English much easier. A. will be B. would have been C. could have been D. would be
A.
will be
B.
would have been
C.
could have been
D.
would be
【简答题】绘制“取回由删除命令所删除的对象”的快捷命令是 ,命令行是 。
【单选题】Some individuals would therefore not have been caught, since no baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past.
A.
would not have been caught
B.
would have been
C.
to trap
D.
leading
【简答题】A.had been used B.are used C.would be used D.would have been used
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