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【单选题】
如图所示,质量为m=0.5kg的小球(可视作质点)从A点以初速度v 0 水平抛出,小球与竖直挡板CD和AB各碰撞一次(碰撞无能量损失),小球最后刚好打到CD板的最低点。已知CD挡板与A点的水平距离为x=2m,AB高度为4.9 m, 空气阻力不计,g=9.8m/s 2 ,则小球的初速度v 0 大小可能是
A.
7m/s
B.
6 m/s
C.
5 m/s
D.
4m/s
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【单选题】以下选项属于响应促进私人消费内需政策的消费是（）。
A.
将汽车卖给外国
B.
政府出资修建铁路
C.
中国人买华为手机
D.
去韩国做整容手术
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A.
天然草本精华
B.
草本水晶晶莹别透
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天然多效独特氟泰配方
D.
独立包装
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【单选题】听力原文：M: What food shall I buy today? W: I want a green salad for lunch. For supper, I want some meat. M: What kind of meat, madam? W: Beefsteak. M: How much beefsteak do you want? W: About 2 pounds. D...
A.
A green salad for lunch and some beefsteak for supper.
B.
Some bread and potatoes for lunch, and some meat for supper.
C.
Some bread for lunch and a green salad for supper.
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【单选题】听力原文：M: Where shall we have dinner tonight? Shall we try that Japanese restaurant? W: I can't eat a thing. I feel terrible. My head aches. Q: What will the woman probably do next? (6)
A.
To have a big dinner.
B.
To see a Japanese friend.
C.
To try a new restaurant.
D.
To stay at home.
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【单选题】听力原文：M: Where shall we have dinner tonight? Shall we try that Italian restaurant? W: I can't eat a thing. I feel terrible. My head aches. Q: What will the woman probably do? (5)
A.
She will have a big dinner.
B.
She will try a new restaurant.
C.
She will see an Italian friend.
D.
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【多选题】下列药材 , 可以干切成饮片的是 ( )
A.
丝瓜络
B.
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C.
谷精草
D.
灯心草
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【单选题】听力原文：W: Can you do the 'Salome' dance, Larry? I can. M: How delightful ! W: Shall I do it now? Would you like to see me?... Isn't that nice?... And now I am perspiring so splendidly. I shall go and ta...
A.
She is sweating all over.
B.
She is sitting and talking.
C.
She is singing a Salome song.
D.
She is showing a book on dance.
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【判断题】图像之间的算术运算需要考虑像素值的取值范围。
A.
正确
B.
错误
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【多选题】下列药材,可以干切成饮片的是()
A.
丝瓜络
B.
北沙参
C.
谷精草
D.
灯芯草
E.
通草
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【单选题】听力原文：M: What food shall I buy today? W: I want a green salad for lunch. For supper, I want some meat. M: What kind of meat, madam? W: Beefsteak. M: How much beefsteak do you want? W: About 2 pounds. D...
A.
A green salad for lunch and some beefsteak for supper.
B.
Some bread and potatoes for lunch, and some meat for supper.
C.
Some bread for lunch and a green salad for supper.
查看完整题目与答案
相关题目：
【单选题】以下选项属于响应促进私人消费内需政策的消费是（）。
A.
将汽车卖给外国
B.
政府出资修建铁路
C.
中国人买华为手机
D.
去韩国做整容手术
查看完整题目与答案
【单选题】在设计 “佳洁士草本水晶牙膏”的卖点时,下列内不适合作为卖点的是( )
A.
天然草本精华
B.
草本水晶晶莹别透
C.
天然多效独特氟泰配方
D.
独立包装
查看完整题目与答案
【单选题】听力原文：M: What food shall I buy today? W: I want a green salad for lunch. For supper, I want some meat. M: What kind of meat, madam? W: Beefsteak. M: How much beefsteak do you want? W: About 2 pounds. D...
A.
A green salad for lunch and some beefsteak for supper.
B.
Some bread and potatoes for lunch, and some meat for supper.
C.
Some bread for lunch and a green salad for supper.
查看完整题目与答案
【单选题】听力原文：M: Where shall we have dinner tonight? Shall we try that Japanese restaurant? W: I can't eat a thing. I feel terrible. My head aches. Q: What will the woman probably do next? (6)
A.
To have a big dinner.
B.
To see a Japanese friend.
C.
To try a new restaurant.
D.
To stay at home.
查看完整题目与答案
【单选题】听力原文：M: Where shall we have dinner tonight? Shall we try that Italian restaurant? W: I can't eat a thing. I feel terrible. My head aches. Q: What will the woman probably do? (5)
A.
She will have a big dinner.
B.
She will try a new restaurant.
C.
She will see an Italian friend.
D.
She will stay at home.
查看完整题目与答案
【多选题】下列药材 , 可以干切成饮片的是 ( )
A.
丝瓜络
B.
北沙参
C.
谷精草
D.
灯心草
E.
通草
查看完整题目与答案
【单选题】听力原文：W: Can you do the 'Salome' dance, Larry? I can. M: How delightful ! W: Shall I do it now? Would you like to see me?... Isn't that nice?... And now I am perspiring so splendidly. I shall go and ta...
A.
She is sweating all over.
B.
She is sitting and talking.
C.
She is singing a Salome song.
D.
She is showing a book on dance.
查看完整题目与答案
【判断题】图像之间的算术运算需要考虑像素值的取值范围。
A.
正确
B.
错误
查看完整题目与答案
【多选题】下列药材,可以干切成饮片的是()
A.
丝瓜络
B.
北沙参
C.
谷精草
D.
灯芯草
E.
通草
查看完整题目与答案
【单选题】听力原文：M: What food shall I buy today? W: I want a green salad for lunch. For supper, I want some meat. M: What kind of meat, madam? W: Beefsteak. M: How much beefsteak do you want? W: About 2 pounds. D...
A.
A green salad for lunch and some beefsteak for supper.
B.
Some bread and potatoes for lunch, and some meat for supper.
C.
Some bread for lunch and a green salad for supper.
查看完整题目与答案