皮皮学，免费搜题
登录
搜题
【单选题】
下列说法正确的是（　　）
A.
目前已被使用的高性能通信材料光导纤维的主要原料是硅
B.
在医疗上，碳酸钠是治疗胃酸过多症的一种药剂
C.
从电影业、照相业、科研单位和医院X光室回收的定影液中可以提取银
D.
空气中的二氧化碳是造成光化学烟雾的主要因素
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
【多选题】How should 110 operators respond when receiving a call?
A.
Take the initiative to help.
B.
Let P.R. ( person reporting) calm down.
C.
Get the key points of a case.
D.
Ask P.R. to contact the local police station for help.
查看完整题目与答案
【简答题】Why should you read the story of the opera before listening to it?A. Because you like reading. B. Because you will enjoy the opera better. C. Because the story is so interesting. D. Because it is sung...
查看完整题目与答案
【单选题】How did Peking Opera came into being?
A.
When four Henan opera troupes performed for the 80th birthday of the Emperor.
B.
When four Heibei opera troupes performed for the 80th birthday of the Emperor.
C.
When four Anhui opera troupes performed for the 80th birthday of the Emperor.
D.
When four Jiangsu opera troupes performed for the 80th birthday of the Emperor.
查看完整题目与答案
【单选题】( )是在差速器与驱动轮之间传递动力的实心轴。
A.
凸轮轴
B.
传动轴
C.
曲轴
D.
半轴
查看完整题目与答案
【单选题】The idea has been widely accepted ______ Beijing Opera should be added to the basic education in China. [     ]
A.
which
B.
when
C.
that
D.
/
查看完整题目与答案
【简答题】建筑钢材按用途不同分为 、 和 3大类。
查看完整题目与答案
【单选题】对脂溶性的酸性化合物,提取时最经济的方法是 ( )
A.
加水煮沸，放冷沉淀
B.
加碱水煮沸，加酸沉淀
C.
用苯回流提取，回收溶剂
D.
乙醇回流提取，回收溶剂
查看完整题目与答案
【判断题】李白自幼受道家很大影响。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】How much he should pay for the room with bathroom per night?
A.
$ 100.
B.
$ 110.
C.
$ 120.
D.
$ 130.
查看完整题目与答案
【单选题】The idea has been widely accepted _____ Beijing Opera should be added to the basic education in China. [     ]
A.
/
B.
when
C.
which
D.
that
查看完整题目与答案
相关题目：
【多选题】How should 110 operators respond when receiving a call?
A.
Take the initiative to help.
B.
Let P.R. ( person reporting) calm down.
C.
Get the key points of a case.
D.
Ask P.R. to contact the local police station for help.
查看完整题目与答案
【简答题】Why should you read the story of the opera before listening to it?A. Because you like reading. B. Because you will enjoy the opera better. C. Because the story is so interesting. D. Because it is sung...
查看完整题目与答案
【单选题】How did Peking Opera came into being?
A.
When four Henan opera troupes performed for the 80th birthday of the Emperor.
B.
When four Heibei opera troupes performed for the 80th birthday of the Emperor.
C.
When four Anhui opera troupes performed for the 80th birthday of the Emperor.
D.
When four Jiangsu opera troupes performed for the 80th birthday of the Emperor.
查看完整题目与答案
【单选题】( )是在差速器与驱动轮之间传递动力的实心轴。
A.
凸轮轴
B.
传动轴
C.
曲轴
D.
半轴
查看完整题目与答案
【单选题】The idea has been widely accepted ______ Beijing Opera should be added to the basic education in China. [     ]
A.
which
B.
when
C.
that
D.
/
查看完整题目与答案
【简答题】建筑钢材按用途不同分为 、 和 3大类。
查看完整题目与答案
【单选题】对脂溶性的酸性化合物,提取时最经济的方法是 ( )
A.
加水煮沸，放冷沉淀
B.
加碱水煮沸，加酸沉淀
C.
用苯回流提取，回收溶剂
D.
乙醇回流提取，回收溶剂
查看完整题目与答案
【判断题】李白自幼受道家很大影响。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】How much he should pay for the room with bathroom per night?
A.
$ 100.
B.
$ 110.
C.
$ 120.
D.
$ 130.
查看完整题目与答案
【单选题】The idea has been widely accepted _____ Beijing Opera should be added to the basic education in China. [     ]
A.
/
B.
when
C.
which
D.
that
查看完整题目与答案