Michael Phelps has a talent for __________.
A. boxing
B. running
C. swimming
查看答案
Talented people sometimes lose their advantages because __________.
A. they don’t work hard enough
B. they don’t know how to use their talents
C. they don’t really have the talents
图层的关键帧,可以直接复制到另一个有相同或者近似效果的图层上。
A. 对
B. 错
1 mol A与nmol B组成的溶液,体积为0.65dm3,当xB= 0.8时,A的偏摩尔体积VA= 0.090dm3·mol-1,那么B的偏摩尔VB 为:( )
A. 0.140 dm3·mol-1
B. 0.072 dm3·mol-1
C. 0.028 dm3·mol-1
D. 0.010 dm3·mol-1
298.2K,1×105Pa,有两瓶四氯化碳溶液,第一瓶为1dm3(含有0.2mol的碘),第二瓶为2dm3(含0.4mol的碘),若以μ1和μ2分别表示两瓶中碘的化学势,则( )
A. μ12=μ2
B. 10μ1=μ2
C. μ1=μ2
D. 2μ1=μ2