皮皮学，免费搜题
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【简答题】
因为回转体表面是有 的,所以一般是 的空间曲线。
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举一反三
【单选题】There are ______________ paper cups beside the water-heater, too. I’ll show you how to use the heater.
A.
free
B.
small
C.
cheap
D.
expensive
【简答题】C51编译器支持的存储类型有data, , , ,code和pdata.
【单选题】以下关于唇癌的描述哪项是错误（）
A.
主要是鳞癌
B.
多发于下唇
C.
较其他口腔癌易发生淋巴结转移
D.
常发生于唇中外1/3间的唇红缘部粘膜
E.
下唇癌常向颏下及颌下淋巴结转移
【单选题】There are free ______________ beside the water-heater, too. I’ll show you how to use the heater.
A.
plastic bowls
B.
paper bowls
C.
plastic cups
D.
paper cups
【简答题】There are ______________ paper cups beside the water-heater, too. I’ll show you how to use the heater.
【单选题】I’ll show you how to accomplish each step________ in the next several section.
A.
in turn
B.
in fact
C.
in place
D.
in time
【单选题】I’ll show you how to accomplish each step _____ in the next several sections.
A.
in turn
B.
in fact
C.
in place
D.
in time
【简答题】There are free ______________ beside the water-heater, too. I’ll show you how to use the heater.
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