皮皮学，免费搜题
登录
搜题
【单选题】
下面成运行的结果是 abstract class A { public abstract void printStr(string str); } class B : A { public override void printStr(string str) { str = str + "override"; Console.WriteLine(str); } } class Program { static void Main(string[] args) { A a = new B(); a.printStr("print "); Console.ReadKey(); } }
A.
print
B.
override
C.
print override
D.
编译出错
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】雾霾危害虽多,但是我们可以采取相应的措施来应对雾霾天气,下列哪项措施不值得提倡( )
A.
绿色出行，少开私家车。
B.
劝导家人少燃放烟花爆竹减少污染。
C.
多吃清肺润肺食品。
D.
应加大在雾霾天气开窗通风的频率
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera on your trip. M: I would have, but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
He enjoyed using his new camera.
B.
He left his camera at the airport.
C.
He left his camera in his friend's car.
D.
He lost his camera on his trip.
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera off your trip? M: I would have,but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
He lost it at the airport.
B.
He enjoyed using it.
C.
He left it in his friend's car.
D.
The camera was damaged.
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera on your trip. M: I would have, but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
The man lost his new camera at the airport.
B.
The man left his new camera in his friend's car.
C.
The man enjoyed using his new camera on his trip.
D.
The woman lost her new camera on her way to the airport.
查看完整题目与答案
【单选题】在下列 Java 的基本数据类型中,所占字节数最少的是 ________ 。
A.
char
B.
boolean
C.
short
D.
float
查看完整题目与答案
【单选题】我国不少地区把雾霾天气作为一种危害性天气预警预报，下列关于雾霾的说法错误的是：
A.
“雾”和“霾”往往是相互转化，相伴而生的，所以我们常说雾霾天气
B.
在雾霾天气应尽量避免早晚开窗通风，最好等太阳出来后再开窗通风
C.
“雾”和“霾”虽然都会造成能见度恶化，并危害人体健康，但两者有很大区别
D.
雾霾主要是由二氧化硫、氮氧化物和可吸人颗粒物组成，但是颗粒物才是加重污染的罪魁祸首
查看完整题目与答案
【单选题】在下列Java的基本数据类型中,所占字节数最少的是_________。
A.
char
B.
int
C.
double
D.
float
查看完整题目与答案
【简答题】A: Good morning, everybody! My name is Li Ming. I will be your tour guide for your trip in Guilin. B: It seems there are so many beautiful sceneries in Guilin. What are we going to see first? A: Today...
查看完整题目与答案
【单选题】我国不少地区把雾霾天气作为一种危害性天气预警预报，下列关于雾霾的说法错误的是：
A.
“雾”和“霾”往往是相互转化，相伴而生的，所以我们常说雾霾天气
B.
在雾霾天气应尽量避免早晚开窗通风，最好等太阳出来后再开窗通风
C.
“雾”和“霾”虽然都会造成能见度恶化，并危害人体健康，但两者有很大区别
D.
雾霾主要是由二氧化硫、氮氧化物和可吸入颗粒物组成，但是颗粒物才是加重污染的罪魁祸首
查看完整题目与答案
【单选题】在下列Java的基本数据类型中,所占字节数最少的是_________。
A.
char
B.
Boolean
C.
short
D.
float
查看完整题目与答案
相关题目：
【单选题】雾霾危害虽多,但是我们可以采取相应的措施来应对雾霾天气,下列哪项措施不值得提倡( )
A.
绿色出行，少开私家车。
B.
劝导家人少燃放烟花爆竹减少污染。
C.
多吃清肺润肺食品。
D.
应加大在雾霾天气开窗通风的频率
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera on your trip. M: I would have, but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
He enjoyed using his new camera.
B.
He left his camera at the airport.
C.
He left his camera in his friend's car.
D.
He lost his camera on his trip.
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera off your trip? M: I would have,but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
He lost it at the airport.
B.
He enjoyed using it.
C.
He left it in his friend's car.
D.
The camera was damaged.
查看完整题目与答案
【单选题】听力原文：W: You must have enjoyed using your new camera on your trip. M: I would have, but after buying a new camera especially for that trip, I left it in the car with my friend who drove me to the airpo...
A.
The man lost his new camera at the airport.
B.
The man left his new camera in his friend's car.
C.
The man enjoyed using his new camera on his trip.
D.
The woman lost her new camera on her way to the airport.
查看完整题目与答案
【单选题】在下列 Java 的基本数据类型中,所占字节数最少的是 ________ 。
A.
char
B.
boolean
C.
short
D.
float
查看完整题目与答案
【单选题】我国不少地区把雾霾天气作为一种危害性天气预警预报，下列关于雾霾的说法错误的是：
A.
“雾”和“霾”往往是相互转化，相伴而生的，所以我们常说雾霾天气
B.
在雾霾天气应尽量避免早晚开窗通风，最好等太阳出来后再开窗通风
C.
“雾”和“霾”虽然都会造成能见度恶化，并危害人体健康，但两者有很大区别
D.
雾霾主要是由二氧化硫、氮氧化物和可吸人颗粒物组成，但是颗粒物才是加重污染的罪魁祸首
查看完整题目与答案
【单选题】在下列Java的基本数据类型中,所占字节数最少的是_________。
A.
char
B.
int
C.
double
D.
float
查看完整题目与答案
【简答题】A: Good morning, everybody! My name is Li Ming. I will be your tour guide for your trip in Guilin. B: It seems there are so many beautiful sceneries in Guilin. What are we going to see first? A: Today...
查看完整题目与答案
【单选题】我国不少地区把雾霾天气作为一种危害性天气预警预报，下列关于雾霾的说法错误的是：
A.
“雾”和“霾”往往是相互转化，相伴而生的，所以我们常说雾霾天气
B.
在雾霾天气应尽量避免早晚开窗通风，最好等太阳出来后再开窗通风
C.
“雾”和“霾”虽然都会造成能见度恶化，并危害人体健康，但两者有很大区别
D.
雾霾主要是由二氧化硫、氮氧化物和可吸入颗粒物组成，但是颗粒物才是加重污染的罪魁祸首
查看完整题目与答案
【单选题】在下列Java的基本数据类型中,所占字节数最少的是_________。
A.
char
B.
Boolean
C.
short
D.
float
查看完整题目与答案