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【单选题】
以下程序的功能是:按顺序读入4名学生3门课程的成绩,计算出每位学生的平均分并输出,程序如下: #include int main( ) { int n,k; float score,sum,ave; sum=0.0; for(n=1;n<=4;n++) { for(k=1;k<=3;k++) { scanf("%f",&score); sum+=score;} ave=sum/3.0; printf("NO%d:%f\n",n,ave); } return 0; } 上述程序运行后结果不符合题意,是因为其中有一条语句置于程序中的位置错误, 这条语句是( )。
A.
sum+=score;
B.
printf("NO%d:%f\n",n,ave);
C.
ave=sum/3.0;
D.
sum=0.0;
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【单选题】某股份公司因2000年度出现亏损,董事会提议2000年度暂缓发放优先股股息,待以后盈利年度一并发放。根据上述描述,可知该公司发行的优先股属于( )。
A.
可转换优先股
B.
参与优先股
C.
股息率可调整优先股
D.
累积优先股
【多选题】箱体加工采用“先面后孔”原则,是由于 。For housing machining, planes'machining is performed prior toholes, because 。
A.
符合先粗后精 Rough machinig prior to finish machinig
B.
符合先主后次 Primary surface machining prior to secondary surface
C.
可简化夹具结构 Simplify the structure of the fixtures
D.
有利于加工孔 Be beneficial to machining holes
【判断题】用全弓演奏一共三音的音阶时,每个音各用三分之一弓。
A.
正确
B.
错误
【多选题】Select the factors that should be considered In the selection of machining method of a surface.
A.
the design and processing features
B.
machining accuracy
C.
workpiece material and heat treatment
D.
available production conditions and technical level in workshop
【单选题】Eletrochemical machining. electrical discharge machining. and laser-beam machining are
A.
common processes
B.
uinconventional processes
C.
traditonal processes
【单选题】Which stage of maching is to decrease the surface roughness, and to improve the machining accuracy at the same time?
A.
Finish machining phase
B.
Burnish machining phase
C.
Rough machining phase
D.
Semi-finish machining phase
【判断题】the guideway surface should have a small and even machining allowance in machining
A.
正确
B.
错误
【单选题】单位SHI ?
A.
撒子
B.
深圳市
C.
紫霞仙子
D.
试算
【单选题】We should loads pallet 1 into the ________ for machining purposes.
A.
machining compartment
B.
loading station
C.
working area
D.
office area
【简答题】Machining quality includes machining accuracy and .
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