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【单选题】
在统计分析中,使用饼图的主要任务是( )。A.
对总体中各组成部分所占比重进行研究
B.
比较多个总体的构成
C.
看一组数据分布的密集程度
D.
比较多个样本的相似性
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皮皮学刷刷变学霸
举一反三
【单选题】下列生活中的物理数据最接近实际的是（ ）
A.
人正常速度骑自行车的功率为1kW
B.
把2个鸡蛋匀速举高1米做功20J
C.
普通日光灯正常工作电流约150mA
D.
不高于220V的电压对人体是安全的
【单选题】Which is wrong for the description of ABO gene?
A.
The ABO gene is located on chromosome 9q34.
B.
The ABO gene is fairly large, consisting of night exons spread over 18 kb.
C.
The open reading frame of the protein is located primarily in exons 6 and 7.
D.
ABO expression is also regulated by the H gene, which is responsible for the synthesis of H antigen substrate, the precursor of A and B antigens.
【单选题】有如下程序段:执行这个程序段后输出字符*的个数是 ________。 int i=1; while(1){ i++; if(i==30)break; if(i%3==0) cout<<'*'; }
A.
10
B.
8
C.
9
D.
30
【单选题】有如下程序段：inti=1;while(1){i++;if(i==30)break;if(i%3==0)cout<<'*';}执行这个程序段后输出字符*的个数是< /div>
A.
10
B.
8
C.
9
D.
30
【单选题】Which of the following statements is closest in the meaning to the underlined sentence above?
A.
Kindness and violence can change the world.
B.
Kindness and violence can affect one's behavior.
C.
Kindness and violence can reproduce themselves.
D.
Kindness and violence can shape one's character.
【单选题】Which test is not included in the routine test for ABO system?
A.
red cell grouping or forward type
B.
serum grouping
C.
coombs
D.
reverse type
相关题目：
【单选题】有如下程序段：inti=1;while(1){i++;if(i==30)break;if(i%3==0)cout<<'*';}执行这个程序段后输出字符*的个数是< /div>
A.
10
B.
8
C.
9
D.
30