哺乳动物如牛、羊等是人类生活中一种重要的肉制品、皮毛制品的原料来源，但哺乳动物妊...

皮皮学，免费搜题

搜题

【单选题】

哺乳动物如牛、羊等是人类生活中一种重要的肉制品、皮毛制品的原料来源，但哺乳动物妊娠时间长，每胎产子数少，繁殖速度比较慢。要加快优良种畜的繁殖速度，目前最好采用的方法

动物细胞培养

胚胎移植

动物细胞融合

核移植

手机使用

复制链接

新浪微博

分享QQ

微信扫一扫

微信内点击右上角“…”即可分享

反馈

参考答案：

举一反三

【单选题】Section C Directions: In this section, you will hear three passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you he...

Watching can cause physical diseases.

TV places the viewer in a completely passive position.

People are too dependent on TV.

The quality of some TV programs is poor.

查看完整题目与答案

【单选题】若各选项中所有变量已正确定义，函数fun中通过return语句返回一个函数值，以下选项中错误的程序是______。

mam() {…… x=fun(2,10) ……} fioat fun(int a,int b) { ……}

float fun (int a,int b) {……} main() {…… x=fun(i,j) ……}

float fun (int int) main() {…… x=fun(2,10) ……} float fun (int a,int b){ ……}

main() { float fun (int i, int j) …… x=fun(i,j) ……} float fun (int a,int b){ ……}

查看完整题目与答案

【单选题】在VBA中，子程序与自定义函数在程序代码上没有太大区别，唯一不同的是()。

自定义函数的返回值只有一个

子程序只能通过表达式来调用

调用方式不用

查看完整题目与答案

【简答题】回答题Directions: Read the following text. Choose the best word or phrase for each numbered blank and mark A， B，C， or D on your ANSWER SHEET. In the United States today， families basically have two contr...

查看完整题目与答案

【简答题】Our reporter asked people what they were doing on July 20, 1960 when a man first walked on the moon. Here is what they said: 小题1:_______ was having a picnic with the family when a man first walked on ...

查看完整题目与答案

【简答题】听短文，选择最佳答案。短文念两遍。 1. Mr. Jenkins is a(n) _______. A. office worker B. English teacher C. baseball player 2. Robert often asks his father to _______. A. tell him a story B. read newspapers C. watch a b...

查看完整题目与答案

【判断题】在三极管放大电路中, 测得三极管各个电极的电位如图所示。管子是PNＰ型，是硅管，１、２、３电极分别是Ｃ、Ｂ、Ｅ极。

正确

错误

查看完整题目与答案

【简答题】如果一个自定义函数过程的RETURN语句中没有指定表达式,那么该函数的返回值是

查看完整题目与答案

【单选题】高岭土中“高岭”命名源自于（）省的高岭村

山东

广东

江苏

江西

查看完整题目与答案

【简答题】The st way to say it is this: I believe in my mother. My 36 began when I was just a kid. I 37 becoming a doctor. My mother was a domestic. Through her work, she observed that 38 people spent a l...

查看完整题目与答案

相关题目：

Watching can cause physical diseases.

TV places the viewer in a completely passive position.

People are too dependent on TV.

The quality of some TV programs is poor.

查看完整题目与答案

【单选题】若各选项中所有变量已正确定义，函数fun中通过return语句返回一个函数值，以下选项中错误的程序是______。

mam() {…… x=fun(2,10) ……} fioat fun(int a,int b) { ……}

float fun (int a,int b) {……} main() {…… x=fun(i,j) ……}

float fun (int int) main() {…… x=fun(2,10) ……} float fun (int a,int b){ ……}

main() { float fun (int i, int j) …… x=fun(i,j) ……} float fun (int a,int b){ ……}