题目

 Men are more suited to occupational environments ________ require decisive action while women are better at jobs ________ a considered approach is most important. A. which; that  B. /; when  C. which; when  D. that; where 答案：D用“油膜法”可以估测分子的大小：滴入盛水培养皿中的油酸溶液所含纯油酸体积为4.0×10-6mL，将培养皿水平放在每小格边长为1cm的方格纸上，水面上散开的油膜轮廓如图所示．该油膜面积为S=______cm2，由此可以估算油酸分子直径约d=______m．