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【单选题】
黄连的道地产区是
A.
阜康 新疆
B.
荆州 湖北
C.
石柱 四川
D.
贵州
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【简答题】The flood of women into the job market boosted economic growth and changed U.S. society in many ways. Many in-home jobs that used to be don_ 1 by women — ranging from family shopping to preparing meal...
【简答题】The flood of women into the job market boosted economic growth and changed U.S. society in many ways. Many in-home jobs that used to be don_ 1 by women — ranging from family shopping to preparing meal...
【简答题】The flood of women into the job market boosted economic growth and changed U.S. society in many ways. Many in-home jobs that used to be don_ 1 by women — ranging from family shopping to preparing meal...
【简答题】The flood of women into the job market boosted economic growth and changed U.S. society in many ways. Many in-home jobs that used to be don_ 1 by women — ranging from family shopping to preparing meal...
【单选题】生活给水管道,消防给水管道分别常采用( ) 比较合适 。
A.
塑料管道,镀锌钢管
B.
钢筋混凝土管,塑料管道
C.
金属管道,陶土管道
D.
镀锌钢管,塑料管道
【单选题】下列塑料管道中,( )适用于给水管道(非饮用水)、排水管道、雨水管道。
A.
氯化聚氯乙烯(PVC-C)管
B.
硬聚氯乙烯(PVC-U)管
C.
无规共聚聚丙烯(PP-R)管
D.
丁烯(PB)管
【多选题】给水管道定额适用于
A.
生活饮用水管道安装
B.
热水管道安装
C.
中水管道安装
D.
压力排水管道安装
【判断题】场上某产品存在超额需求,是因为该产品价格低于均衡价格。
A.
正确
B.
错误
【单选题】下列塑料管道中,()适用于给水管道(非饮用水)、排水管道、雨水管道。
A.
氯化聚氯乙烯(PVC-C)管
B.
硬聚氯乙烯(PVC-U)管
C.
无规共聚聚丙烯(PP-R)管
D.
D.丁烯(P管
【多选题】给水管道安装必须达到哪些条件。()
A.
给水管道必须采用与管材相适应的管件
B.
给水管道必须采用与管材相同的管件
C.
生活给水系统所涉及的材料必须达到饮用水卫生标准
D.
给水管道选择性价比较高的管材
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