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【简答题】
氯乙烯一乙酸乙烯共脂聚物,按重量计含氯乙烯单体单元为45%,乙酸乙烯脂单体单元为55%(水分散体,初级形状) (2002年考题)____________
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【单选题】若有以下定义和语句: char*s1='12345',*s2='1234'; printf('%d/n',strlen(strcpy(s1,s2)));则输出结果是______。
A.
4
B.
5
C.
9
D.
10
【单选题】( 31 )若有以下定义和语句 char s1[10]= ' abcd! ' ,*s2= ' /n123// ' printf ( ' %d %d/n ', strlen ( s1 ) ,strlen ( s2 ) ) 则输出结果是
A.
) 5 5
B.
) 10 5
C.
) 10 7
D.
) 5 8
【单选题】City Y has installed 30 parking meters at 15-foot intervals along a straight street. What is the number of feet between the first meter and the last meter?
A.
200
B.
420
C.
435
D.
450
E.
465
【单选题】不属于冠心病发病危险因素的是
A.
收缩压升高
B.
低密度脂蛋白增高
C.
吸烟
D.
高密度脂蛋白降低
E.
饮酒
【单选题】若有以下定义语句: char * sl='12345', * s2='1234'; printf('%d'n',strlen(strcpy(s1,s2))); 则输出结果是 ( )
A.
4
B.
5
C.
9
D.
10
【单选题】不属于冠心病发病危险因素的是
A.
低密度脂蛋白增高
B.
收缩压升高
C.
高密度脂蛋白降低
D.
吸烟
E.
饮酒
【单选题】An economy has IS and LM curves given by R = 25 - 2 Y; R = - 10 + 0.5M + Y; where R is the interest rate (percent), Y is GNP ($ billions), and M is the money supply. The government has a target for GN...
A.
Since Y =7.5, R=10 (percent), M=25($ billions).
B.
Since  Y =7.5, R=20 (percent), M=15($ billions).
C.
Since  Y =7.5, R=10 (percent), M=15($ billions).
D.
Since  Y =7.5, R=20 (percent), M=25($ billions).
【单选题】若有定义语句:“char*s1=”0K”,*s2=”ok”;”,以下选项中,能够输出“OK”的语句是( )。
A.
if(strcmp(sl,s2)= =0)puts(s1);
B.
if(strcmp(sl,s2)!=0)puts(s2);
C.
if(strcmp(sl,s2)= =l)puts(s1);
D.
if(stremp(sl,s2)!=0)puts(s1);
【单选题】Yoram insists on consuming 3 times as much y as he consumes of x (so he always has y = 3x). He will consume these goods in no other ratio. The price of x is 2 times the price of y. Yoram has an endowm...
A.
90
B.
66
C.
18
D.
16
【简答题】A firm has a cost function given by c(y)=40y 2 +4000. What is its supply curve? At what output is average cost minimized?
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