危害水产动物的水霉属、绵霉属的真菌菌丝特征是() A.由若干链珠状的细胞组成 B.整

题型:单项选择题 A1型题

问题:

危害水产动物的水霉属、绵霉属的真菌菌丝特征是()

A.由若干链珠状的细胞组成

B.整个菌丝是1个单细胞,内含多个细胞核

C.菌丝是由多细胞构成,每个细胞含1个细胞核

D.菌丝有隔膜,隔膜将菌丝隔成多个细胞,每个细胞内有1个或多个孔,能让相邻两细胞内的物质相互交换

考点:执业兽医(水生动物类)考试水生动物病原生物学水生动物病原生物学题库
题型:单项选择题 A1型题

下列哪些方法可用于生殖器疱疹的实验室检查()。

A.病毒培养

B.单克隆抗体直接免疫荧光法

C.甲苯胺蓝试验

D.HSV-DNA-PCR

题型:单项选择题 A1型题

阅读理解。

     Pop singer star Britney Spears would feel happy (or amused) if she knew what her songs can do for some

German farmers.

     Recently, some farmers in Germany have been playing Britney's songs very often on their farms. Not that

they like her songs a lot, but that her songs can drive away the troublesome wild boars (野猪)!

     As the boars are an endangered animal in Germany, people can't shoot or kill them. Farmers there tried their

best to stop the boars from destroying their crops but failed.

     One day, one of the German farmers noticed that all the boars were scared away when he started to play

one of Britney's songs!

     The farmer was delighted and then he tried some other singers on the boars. Madonna's and Robbie

Williams' songs didn't work at all.

     Only Britney's songs seemed to have the magical power. Every time her songs were played on his farm, the

boars would go running away in a rush.

     It's reported quite a number of German farmers are using Britney's magic songs to protect their vegetable

and fruits.

1. The farmers play Britney's songs on their farms so that _____. [ ]

A. they can protect their crops and fruits

B. they don't feel tired from working

C. their crops may grow better

D. they can get some money from the music company

2. The farmers cannot shoot the boars because _____. [ ]

A. they are not allowed to own guns

B. they are afraid the boars might attack them

C. the boars are protected by law

D. the boars are owned by some other farmers

3. Which of the following statements is true ac-cording to the text? [ ]

A. Animals like to listen to music by different singers.

B. Not all the singers' songs are liked by the boars in Germany.

C. Boars in Germany like Britney's songs very much.

D. Britney's songs seem to be quite different from other singers'.

题型:单项选择题 A1型题

全球定位系统(GPS)是利用卫星在全球范围内适时进行导航、定位的系统。

据此完成(1)——(3)题。

(1)图中的甲、乙两区域是两颗卫星在某一时刻分别所覆盖的区域,其服务范围大小是[ ]

    A、甲等于乙

    B、甲大于乙

    C、甲小于乙

    D、无法确定

(2)下面关于甲、乙两区域卫星图像的解析,正确的是[ ]

    A、甲区域位于乙区域的西北方向

    B、甲区域为温暖广阔的浅海,渔业和石油资源丰富

    C、乙区域分布有世界最大的热带雨林区,但破坏较为严重

    D、甲乙两区域均为热带草原,牧场广阔,牛羊成群

(3)GIS与地图的最基本的差异是[ ]

    A、空间模型  

    B、数据模型 

    C、阅读速度  

    D、空间分析能力

题型:单项选择题 A1型题

双作用叶片泵的叶子在转子槽中的安装方向是()。

A.沿着径向方向安装

B.沿着转子旋转方向前倾一角度

C.沿着转子旋转方向后倾一角度

D.无要求

题型:单项选择题 A1型题

下列程序的运行结果是 【11】
#include<iostream, h>
class Base

public:
void f(int x) cout<<"Base:"<<x<<end1;
;
class Derived: public Base

public:
void f(char * str) cout<<"Derived:"<<str<<end1;
;
void main(void)

Base * pd=new Base;
pd=new Derived;
pd->f(’a’)

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