The pillar shape that gives the greatest strength for the least weight is the（）.

[名词解释] 圈柱LEG LOOP PILLAR

[单选题]If the steersman of your lifeboat gives the command Way enough，you should（）.A . complete the stroke，hold your oar out from the boat and level with the waterB . dip the blade of your oar into the water and leave it thereC . lift your oar to a vertical

[单选题]H．egivespeopletheimpression________allhislifebroad.A．)ofhavingspentB)tohavespentC)ofbeingspentD)tospend

[单选题]A call option gives the holder:A.The right to sell at a specific price.B.Th

[单选题]（ 32 ）下面是类 Shape 的定义：class Shape{public:virtual void Draw()=0;};下列关于 Shape 类的描述中，正确的是A． ）类 Shape 是虚基类B． ）类 Shape 是抽象类C． ）类 Shape 中的 Draw 函数声明有误D． ）语句 “ Shape s; ” 能够建立 Shape 的一个对象 s

[单选题]下面是类Shape的定义： class Shape{ public： virtual void Draw()=0； } 下列关于Shape类的描述中，正确的是( )。A．类Shape是虚基类B．类Shape是抽象类C．类Shape中的Draw函数声明有误D．语句“Shape s；”能够建立Shape的一个对象s

[单选题]Shape文件不能存储（）信息A . 拓扑B . 索引C . 属性D . 模型

[单选题]22． Who else gives children some homework to do except their teachers?A． Their parents．B． Other students．C． The children themselves．D． Nobody else．

[主观题]C．omputer is one of the greatest ___________________ (发明). I can’t imagine life without it.

[主观题]Then we start to shape our thoughts our own word and finish 78.