【简答题】以PP为例,双向拉伸PP薄膜和未拉伸PP薄膜相比,有哪些特性?
【简答题】不同类型的连锁企业如何与地点类型相匹配?
【多选题】Space heating through passive solar can be realized by _______.
A.
using overhangs that are used to shield the home from the high, summer sun, but are designed to allow the low, winter sunlight to enter the windows
B.
using building materials to absorb the sun's energy and store it, releasing it into the home at night after the sun has set
C.
using a flat-plate collector to absorb the sun's energy to heat the water.
D.
designing sunspaces and trombe walls
【简答题】C公司正在考虑是否将现有旧的人工操作的设备更换为全自动设备,有关资料如下: 单位:元 目前状况 采用新设备的预计情况 操作工人的年工资 24000 操作工人的年工资 0 (无需操作工人) 年运行成本(不含操作工人工资、折旧与修理费的摊销) 6000 年运行成本(不含操作工人工资、折旧与修理费的摊销) 20000 年残次品成本(付现成本) 5000 年残次品成本(付现成本) 2500 旧机器当初购买...
【简答题】Space heating through passive solar can be realized by _______.A. using overhangs that are used to shield the home from the high, summer sun, but are designed to allow the low, winter sunlight to ente...
【简答题】不同类型的连锁企业如何与地点类型相匹配?
【简答题】Space heating system is consist of _________, __________ and _______
【简答题】______ 2. 36% of all the energy in the world has been consumed by space heating and cooling.
【单选题】The space between a false ceiling and the true ceiling where heating and cooling air circulates is called the ______________.
A.
duct-equivalent airspace