X精子和Y精子DNA含量的差异为
A: 1-3%
B: 3-5%
C: 1-2%
D: 5-8%
A: 1-3%
B: 3-5%
C: 1-2%
D: 5-8%
举一反三
- 中国大学MOOC: X精子和Y精子DNA含量的差异为
- intx=5,y=8,z=7;表达式z=!(x>y)||(x=1,y=3)计算后的结果 A: x=1,y=3,z=1 B: x=1,y=3,z=0 C: x=5,y=8,z=0 D: x=5,y=8,z=1
- 执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}
- 在matlab中下列程序正确的是( ) A: A=1:8;B=(A>2)&&(A<6) B: for x =1:10 y=x.^+1; C: for x=-10:10if x>0 y=x.^2;elsey=x+1;endend D: A=[1 2 4; 3 5 8];B=[3 5 5; 5 5 5];C=A*B
- 若有int x,y,z;,则执行以下程序段后的输出结果为:x=1;y=3;z=5;if(x>;y)x=y;y=z;printf("x=%d,y=%d,z=%d",x,y,z); A: x=1,y=5,z=5 B: x=1,y=3,z=3 C: x=5,y=3,z=5 D: x=5,y=3,z=3