灌溉、排水泵站的工程等别，应根据( )确定。 A．供水对象的重要性 B．失事造成的

不同种类的食物混合食用，可改善膳食中（）。

A.蛋白质含量

B.表观消化率

C.真实消化率

D.必需氨基酸比例

E.净利用率

请编制程序ReadDat()实现从文件in.dat中读取100个十六进制数到字符串数组xx中；再编制函数h16to10()，将xx中的十六进制数转换成十进制数并把已转换的十进制数仍存放在字符串数组xx，最后调用函数WriteDat()把结果输出到out．dat文件巾。原始数据文件存放的格式是：每行存放10个数，并用逗号隔开(每个数均大于0且小于等于2000)。
请勿改动主函数main()、输出数据函数writeDAT()的内容。
[试题源程序]
#include＜stdio．h＞
#include＜stdlib．h＞
#include＜string．h＞
#include＜ctype．h＞
#define MAX 10
char xx[MAX][20]；
void WriteDat(void)；
int ReadDat(void)

FILE*fp；
if((fp=fopen("IN．DAT，"r"))==NULL)return 1：
fclose(fp)；
return 0；

void H16tol0(void)

void main()

int i；
for(i=0；i＜MAX；i++)memset(xx，0，20)；
if(ReadDat())

printf("Can’t open the data file in．dat!＼007＼n")；
return；

H16to10()；
WriteDat()；

void WriteDat(void)

FILE*fp；
int i；
fp=fopem("OUT DAT"，"w")；
for(i=0；i＜MAX；i++)fprintf(fp，"%s＼n"，xx[i])；
fclose(fp)；

Passage 1 The US dollar value of Chinese exports increased at an average rate of almost 18 per cent per annum between 1978 and 1983, while imports increased by approximately 11 per cent per annum. As a result, the visible trade surplus rose sharply from US $1.4 billion in 1981 to US $4.4 billion in 1982 and US$3.7 billion in 1983. Exports grew much faster than imports during this period not only because of the p emphasis placed on exporting by China’s economic planners, but also because a number of industrial projects were postponed in 1979. Official recognition that foreign technology could play a major role in modernising the Chinese economy had caused imports to rise by more than 50 per cent in 1978 placing undue strain on the national economy. Grain imports have fallen sharply over the past few years—China became a net grain exporter in 1984—and in 1983 the country started to export soyabeans and cotton.

Why did the more than 50% rise in imports of 1978 place undue strain on China’s national economy

Windows系统安装完后，默认隋况下系统将产生两个帐号，分别是管理员帐号和（）。C

对人员巡视最常用的方法是( )。

A．直接巡视
B．考核
C．旁站监督
D．谈话