以下哪种生化指标常被用于对前列腺癌诊断（）。 A.PSA B.CEA C.AFP D

胆固醇体内合成的原料是（）

A.胆汁酸盐和磷脂酰胆碱

B.17羟类固醇和17酮类固醇

C.胆汁酸和VD等

D.乙酰COA和NADPH

E.胆汁酸

有关宪政的特征表述不正确的是：

A．宪法实施是建立宪政的基本途径

B．建立有限政府是宪政的基本精神

C．真实而科学的宪法是宪政的生命

D．树立宪法的最高权威是宪政的集中表现

小题1:I want to travel, e______________to English-speaking countries.

小题2:Keeping p__________, such as dogs and cats is more and more popular among young and old.

小题3:Have you ever h_______________ of the interesting story?

小题4:Would you m_______________ turning down the music?

小题5:He has been c________________ stamps for five years.

下列程序的功能是统计字符串中“array”的个数，在程序的空白处应填入的正确选项是　　public class FindKeyWords{　　public static void main(sring[] args){　　sting text=　　“ An array is a data structur that stores a collection of”　　+ “values of the same type . You access each individual value”　　+ “through an integer index . For example,if a is an array”　　+ “of inergers, then a[i] is the ith integer in the array.”;　　Int arrayCount =0;　　Int idex = -1;　　Sting arrarStr =”array”;　　Index = text.indexof(arrayStr);　　While(index 0) {　　++arrayCount;　　Index += arrayStr.length();　　Index = text.indexof(arrayStr,index);　　}　　System.out.println　　(“the text contains” + arrayCount + “arrays”);　　}　　}

A．<

B．=

C．<=

D．>=

导爆管起爆法的一般起爆过程是什么？