适合做 W/O 型乳化剂的是()。
A.1-3
B.3-8
C.8-16
D.7-9
E.13-16
适合做润湿剂的是()。
A.1-3
B.3-8
C.8-16
D.7-9
E.13-16
适合做消泡剂的是()。
A.1-3
B.3-8
C.8-16
D.7-9
E.13-16
适合做去污剂的是()。
A.1-3
B.3-8
C.8-16
D.7-9
E.13-16
阅读下列程序,则执行后的结果为 #include"stdio.h" main() { int c[][4]={1,2,3,4,5,6,7,34,213,56,62,3,23,12,34,56}; printf("%x,%x\n",c[2][2],*(*(c+1)+1));}
A.3e,6
B.62,5
C.56,5
D.3E,6
#$#%&()#*!#+&,-#.)/01&2#4/5#6537-51#$%&$()*&$%+,-()(.+()/0(12+%(1(3%+4$35(14,(36+7(%#+3#$8)*&$%+,+3$91,41(33+0()+3&,0(12,.,*1,5+4,1$&(:%;%1$76239($7+4#%#+34,$6&$#$1)62-(.*62$&#+(0():,1,(%#+4#%#(,1$,%#(1#,*16+13%,16)$1:)#+3+3-(&$*3(%#(9($7&#+6)-($1+42($13,.%#+34(1$%+,5#,-,1L*3%$.%(1%#(+13%,16)$1&,+&+)()5+%#%+?&()*+!#W$%X()*+,5!34;()*?()*+,5Q#= H$&,*%)A#8&1$56+4)+3%$6),.(13)5H*91,%(&%)36+99+4)%!)($)62)B+L*1+,*3)&!(%+1(62)9$1%+&*6$162)!(!)!*+*#+_ga()#+*#+8A%#H%8%97%K%!(!)!*,-#:;?./#($9(16,4O)+3%$&(%1$0(6+*#+N=?92,%6($)9(,96(%, +*#+*#88+,-#82./#(%5(!)!+*#+99!*(%,1,*4#%.,1%#+!(!)!*./#0+)(%91,98#+./#1$)*$%(91,41$9!U!./#(F+3%12,&$%+,+*#188689s#./#$&(%#()*&$%+,*$%(3+%($&#+4(#818293#1+7.#1!$7/!,-!$#34569&+8684#!(!)!*S!:./#+4#%9,6*%+,+*#1j#82J:./#,*1&(+*#(+./#(%#+1)9$1$41$9#&+*#v8m(a(+m*899+./#S!%Z!88A+,8A/8A84%p!593X#hU97|7FX
计算:
(1)36×(1/2-1/3)2
(2)12.7÷(-8/19) ×0
(3)4×(-3)2+6
(4)(-3/4)×(-8+2/3-1/3)
(5)(-2)3-13÷(-1/2)
(6)0-23÷(-4)3-1/8
(7)(-2)3×0.5-(-1.6)2÷(-2)2
(8)(-3/2)×[(-2/3)2-2]
(9)[(-3)2-(-5)2] ÷(-2)
(10)16÷(-2)3-(-1/8) ×(-4)
(1)1; (2)0; (3)42; (4)5.75; (5)18; (6)0; (7)-4.64; (8)4/3; (9) -8; (10)-2/3
计算:
(1)(-8)-(-1) (2)45+(-30)
(3)-1.5-(-11.5) (4)-1/4-(-1/2)
(5)15-[1-(-20-4)] (6)-40-28-(-19)+(-24)
(7)22.54+(-4.4)+(-12.54)+4.4
(8) (2/3-1/2)-(1/3-5/6)
(9)2.4-(-3/5)+(-3.1)+4/5 (10)(-6/13)+(-7/13)-(-2)
(11)3/4-(-11/6)+(-7/3)
(12)11+(-22)-3×(-11)
(13)(-0.1)÷1/2×(-100)
(14)(-3/4)×(-2/3 - 1/3) ×0
(15)(-2)3-32
(16)23÷[(-2)3-(-4)]
(17)(3/4-7/8)÷(-7/8)
(18)(-60)×(3/4+5/6)
(1)(-8)-(-1)=-7
(2)45+(-30)=15
(3)-1.5-(-11.5)=10
(4)-1/4-(-1/2)=1/4
(5)15-[1-(-20-4)]=-10 (6)-40-28-(-19)+(-24)=-73
(7)22.54+(-4.4)+(-12.54)+4.4=10
(8) (2/3-1/2)-(1/3-5/6)=-1
(9)2.4-(-3/5)+(-3.1)+4/5=0.7 (10)(-6/13)+(-7/13)-(-2)=1
(11)3/4-(-11/6)+(-7/3)=1/4
(12)11+(-22)-3×(-11)=22
(13)(-0.1) ÷1/2×(-100)=20
(14)(-3/4) ×(-2/3 - 1/3) ×0=0
(15)(-2)3-32=-17
(16)23÷[(-2)3-(-4)]=-23/4
(17)(3/4-7/8) ÷(-7/8)=1/7
(18)(-60) ×(3/4+5/6)=-95
1/4,3/10,7/16,13/22,( )
A.3/5
B.4/5
C.1
D.3/4
下面程序的运行结果是 Private Sub Command1_Click() x=1:y=1 For i=1 To 3 x=x+y:y=y+x Next i:print x,y End Sub
A.6 6
B.5 8
C.13 21
D.34 35
1, 1, 5, 3, 9, 9, 13, 27, ( ), ( )。