One of the main functions of wearing rings, as used in a centrifugal pump, is to _____.
A.maintain radial alignment between the pump impeller and casing
B.absorb all impeller shaft end thrust
C.prevent water leakage to the atmosphere
D.prevent wear of the pump casing and/or impeller
第1题
下面的程序的运行结果是__________
func main() {strs := []string{"one", "two", "three"}for _, s := range strs { go func() { time.Sleep(1 * time.Second) fmt.Printf("%s ", s) }()}time.Sleep(3 * time.Second)}
第2题
第3题
以下程序的执行结果是______
include<iostream.h>
void func(int);
void main()
{
int k=4
func(k) ;
func(k) :
cout<<end1;
}
void func(int a)
{
static int m=0;
m+=a;
cout<<m<<" ";
}
第5题
第6题
有如下程序;
int func(int a, int b)
{ return(a+b); }
main()
{ int x=2, y=5, z=8, r;
r=func(func(x, y), z); printf("% \d\n", r); }
该程序的输出的结果是______。
A.12
B.13
C.14
D.15
第7题
A.4
B.5
C.10
D.11
第8题
以下程序的运行结果是______。
#include<stdio.h>
main()
{int k=4,m=1,p;
p=func(k,m);
printf("%d,",P);
p=func(k,m);
printf("%d\n",p);
}
func(int a, int b)
{static int m=0, i=2
i+=m+1;
m=i+a+b;
return m;
}
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