在现实中,房地产成本的增加一定要对效用增大有作用才能构成价格。()
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关于表面张力和表面自由能,下列说法正确的是( )
A. .物理意义相同,量纲和单位不同
B. 物理意义不同,量纲和单位相同
C. .物理意义和量纲相同,单位不同
D. 物理意义和单位不同,量纲相同
毛笔蘸上水,笔毛就会粘在一起,这是因为 ( )
A. 笔毛上的水在空气中有自动收缩减小表面的趋势
B. 笔毛被润湿
C. 水是表面活性物质
D. 水具有粘度
定体积的水,当聚成一个大水球或分散成许多水滴时,同温度下,两种状态相比,以下的性质保持不变的有( )
A. 表面能
B. 表面张力
C. 比表面
D. 液面下的附加压力
Listen to the recording again and fill in the gaps. IKEA offers [1] ___________ goods in Shanghai, Moscow, New York and London. The company's [2] ___________ is to concentrate on the 267 existing stores and [3] _____________ them. At the moment Europe leads the market with 80% of sales, followed by North America with 15% and Asia with 5%. IKEA needs to [4] _____________ its position in the Russian and Chinese markets. Both of these markets have [5] _____________ for IKEA.There are a lot of people there who do not [6] ______________ so much, which is perfect for IKEA's concept.