同一台泵用于输送密度分别为ρ1和ρ2的液体时,保持转速不变且流动相似,其对应的扬程分别是H1和是H2,对应的轴功率分别为P1和P2,若ρ1>ρ2,则下列关系式中正确的是()
已知:int x= 1,y = 2,z =0,则执行z=x>y?(10+x,10-x):(20+y,20-y)后,z的值为()
intgetLength(intn) { if(n>=0) { returnn; } else { return-1; } }该程序的时间复杂度为:()。
You issued the RMAN>SHOW ALL; command. The output of this command is as follows: After analyzing the output, which conclusion will you draw?()
设f(x)=a0+a1cosx+a2cos2x+…+ancosnx,其中a0,a1,a2,…,an都是实数,且an>|a0|+|a1|+…+|an-1|.讨论方程f(n)(x)=0实根的个数.
Evaluate the following command and its output: SQL>SELECT * FROM dba_temp_free_space; TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE LMTEMP 250609664 101048576 149561088 Which two statements correctly interpret the output?()
You issued the following statement: SQL> ALTER SESSION SET NLS_LANG=FRENCH_CANADA.WE8ISO8859P1; Which parameter is NOT overridden by using the above statement?()
(2008)若P(A)>0,P(B)>0,P(A│B)=P(A),则下列各式不成立的是:()
int a=3,b=2,c=1; if(a>b>c)a=b; else a=c; 则a的值为()。
int i = 1,j = 10; do{ if (i>j) { continue; } j--; } while (++i <6); System.out.println(“i = “ +i+” and j = “+j); What is the result?()