【单选题】如图,用一个半径为10cm半圆纸片围成一个圆锥的侧面(接缝忽略不计),则该圆锥的高为 [ ]
【单选题】—How much do the pencils cost? —Three pounds ______ pencils.
【简答题】Fill out the blanks with the correct forms of words given. 1. I have every ______ in your ability to pass the exam. (Confident) 2. The ideology of the ______ of the fittest was developed by Darwin. (S...
【单选题】用半径为6的半圆围成一个圆锥的侧面,则圆锥的底面半径等于( )
【简答题】小明想用一个扇形纸片围成一个圆锥,已知扇形的半径为5cm,弧长是6πcm,那么围成的圆锥的侧面积是______cm 2 .
【单选题】Pencils have the same unit cost regardless of the number sold, x pencils cost a total of $0.5, and n pencils cost a total of y dollar. Column A Column B n 2xy
A.
if the quantity in Column A is greater
B.
if the quantity in Column B is greater
C.
if the two quantity are equal
D.
if the relationship cannot be determined from the information given
【单选题】下列不属于PDCP协议层的功能的有().
A.
在发送与接收实体中分别执行IP数据流的头部压缩与解压缩;
B.
传输用户数据,也就是将非接入层送来的PDCP-SDU转发到RLC层,或相反;
C.
若支持非丢失的SRNS重定位功能,则前转PDCP-SDU及相应的顺序号;
D.
将高层PDU复用为通过公共传输信道传送给物理层的传送块,并将通过公共传输信道来自物理层的传送块接解复用为高层PDU。
【简答题】某甜品店制作蛋筒冰淇淋,其上半部分呈半球形,下半部分呈圆锥形(如图).现把半径为10cm的圆形蛋皮分成5个扇形,用一个扇形蛋皮围成锥形侧面(蛋皮厚度忽略不计),求该蛋筒冰淇淋的表面积和体积(精确到0.01).
【单选题】单项选择。 Which of the two pencils ______ yours? [ ]
【简答题】小明想用一个扇形纸片围成一个圆锥,已知扇形的半径为5cm,弧长是6πcm,那么围成的圆锥的侧面积是( )cm 2 .