皮皮学，免费搜题
登录
搜题
【单选题】
工质流经冷凝器冷凝( )A.
放出热量，且放热量等于其焓值的减少
B.
放出热量，焓值增加。
C.
吸收外界热量，培值增加
D.
由于冷凝过程中压力不变，所以焓值不变
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Translation The main difference between Chinese and westerneating habits lies in that dishes in China are placedon the table for everybody to share, while everyonehas their own plate of food in the We...
【简答题】国家标准是指由 批准发布，对全国经济、技术发展有重大意义，且在全国范围内统一的。国家标准分为强制性国标（GB）和推荐性国标（GB/T）。A. 国家标准化主管机构B. 标准
【多选题】国家标准是指由 批准发布，对全国经济、技术发展有重大意义，且在全国范围内统一的 。国家标准分为强制性国标（GB）和推荐性国标（GB/T）。
A.
国际标准化主管机构
B.
标准
【单选题】According to the passage, the main part of food that many people are eating today is ______.
A.
soybeans
B.
grain
C.
meat
D.
milk
【多选题】What are the main activities people do in the Lantern Festival? ( )
A.
guessing riddles
B.
setting off fireworks
C.
eating yuanxiao
D.
having a dragon lantern dance
【单选题】are the main eating utensils for Chinese food, which can be used to cut and pick up food.
A.
Knives
B.
Forks
C.
Chopsticks
D.
Spoons
【单选题】What are the main customs of the Dragon Boat Festival?
A.
wearing sachets,racing Dragon Boat and eating dumplings
B.
wearing masks,racing Dragon Boat ang eating zongzi
C.
wearing sachets,racing Dragon Boat and eating zongzi
D.
wearing bags, racing horses and eating dumplings
相关题目：
参考解析：
知识点：
题目纠错 0
发布
