皮皮学，免费搜题
登录
搜题
【单选题】
R407C是R32与R125、R134a按质量比配置而成的非共沸混合物。（）A、23∶52∶25　　B、23∶25∶52　　C、52: 23: 25　　D、52: 25: 23
A.
23∶52∶25
B.
23∶25∶52
C.
52: 23: 25
D.
52: 25: 23
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】Eating better and more adventurously is becoming an obsession, especially among people with money to spend. Healthier eating — and not-so-healthy eating — as well as the number and variety of food cho...
A.
adventurous
B.
more and more popular in the world
C.
a global phenomenon
D.
sweeping up every corner of the earth
查看完整题目与答案
【单选题】Eating better and more adventurously is becoming an obsession, especially among people with money to spend. Healthier eating-and not-so-healthy eating-as well as the number and variety of food choices...
A.
adventurous
B.
more and more popular in the world
C.
a global phenomenon
D.
sweeping up every corner of the earth
查看完整题目与答案
【多选题】在项目交付和试运行阶段,业主认可施工工作、交接必要的文档、执行培训、支付保款、完成工程结算,主要的交付活动包括
A.
建筑和产品系统启动
B.
发放入住授权,设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
查看完整题目与答案
【单选题】Although the novel isn't popular among adults, it ______ the youth, especially boys. [     ]
A.
refers to
B.
appeals to
C.
results in
D.
deals with
查看完整题目与答案
【单选题】Taijiquan is especially popular among ___.
A.
old people
B.
the old
C.
the older
D.
the oldest
查看完整题目与答案
【单选题】The solidarity among the young, especially the 386 Generation, is so strong that it's helping to ______ the country's deep-rooted regional divide.
A.
enhance
B.
dissolve
C.
weaken
D.
move
查看完整题目与答案
【单选题】The ______ of lung cancer is particularly high among long-term heavy smokers, especially chain smokers.
A.
incident
B.
accident
C.
incidence
D.
evidence
查看完整题目与答案
【单选题】牛乳中的蛋白质,主要的蛋白是 。
A.
乳白蛋白
B.
酪蛋白
C.
乳球蛋白
D.
肌球蛋白
查看完整题目与答案
【多选题】在项目交付和试运行阶段，业主认可施工工作、交接必要的文档、付保留款、完成工程结算，主要的交付活动包括(  )
A.
建筑和产品系统启动
B.
发放入住授权, 设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
E.
资产转让
F.
竣工计划提交
G.
保用和保修条款开始生效
查看完整题目与答案
【多选题】在项目交付和试运行阶段，业主认可施工工作、交接必要的文档、执行培训、支付保留款、完成工程结算，主要的交付活动包括()
A.
建筑和产品系统启动
B.
发放入住授权，设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
E.
资产转让
F.
竣工计划提交
G.
保用和保修条款开始生效
查看完整题目与答案
相关题目：
【单选题】Eating better and more adventurously is becoming an obsession, especially among people with money to spend. Healthier eating — and not-so-healthy eating — as well as the number and variety of food cho...
A.
adventurous
B.
more and more popular in the world
C.
a global phenomenon
D.
sweeping up every corner of the earth
查看完整题目与答案
【单选题】Eating better and more adventurously is becoming an obsession, especially among people with money to spend. Healthier eating-and not-so-healthy eating-as well as the number and variety of food choices...
A.
adventurous
B.
more and more popular in the world
C.
a global phenomenon
D.
sweeping up every corner of the earth
查看完整题目与答案
【多选题】在项目交付和试运行阶段,业主认可施工工作、交接必要的文档、执行培训、支付保款、完成工程结算,主要的交付活动包括
A.
建筑和产品系统启动
B.
发放入住授权,设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
查看完整题目与答案
【单选题】Although the novel isn't popular among adults, it ______ the youth, especially boys. [     ]
A.
refers to
B.
appeals to
C.
results in
D.
deals with
查看完整题目与答案
【单选题】Taijiquan is especially popular among ___.
A.
old people
B.
the old
C.
the older
D.
the oldest
查看完整题目与答案
【单选题】The solidarity among the young, especially the 386 Generation, is so strong that it's helping to ______ the country's deep-rooted regional divide.
A.
enhance
B.
dissolve
C.
weaken
D.
move
查看完整题目与答案
【单选题】The ______ of lung cancer is particularly high among long-term heavy smokers, especially chain smokers.
A.
incident
B.
accident
C.
incidence
D.
evidence
查看完整题目与答案
【单选题】牛乳中的蛋白质,主要的蛋白是 。
A.
乳白蛋白
B.
酪蛋白
C.
乳球蛋白
D.
肌球蛋白
查看完整题目与答案
【多选题】在项目交付和试运行阶段，业主认可施工工作、交接必要的文档、付保留款、完成工程结算，主要的交付活动包括(  )
A.
建筑和产品系统启动
B.
发放入住授权, 设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
E.
资产转让
F.
竣工计划提交
G.
保用和保修条款开始生效
查看完整题目与答案
【多选题】在项目交付和试运行阶段，业主认可施工工作、交接必要的文档、执行培训、支付保留款、完成工程结算，主要的交付活动包括()
A.
建筑和产品系统启动
B.
发放入住授权，设施开始使用
C.
业主给承包商准备竣工查核事项表
D.
运营和维护培训完成
E.
资产转让
F.
竣工计划提交
G.
保用和保修条款开始生效
查看完整题目与答案