因为信息不因共享而减少所以要大力提倡信息的无偿共享。
By the time charter,a Shipowner agrees to place his vessel at the disposal of a Charterer for (). ["a period","a trip","a voyage","a journey"]
在室温下不含气体的纯水中碳钢的腐蚀速度小于()mm/a。 ["0.4","0.04","0.004","0.0004"]
在PowerPoint 2003中,设置文本字体时,选定文本后,在菜单栏中选择()菜单开始设置。 ["视图","插入","格式","工具"]
为缩短运距,减少巷道掘进量,弯道曲线半径越小越好。
植物光合同化CO2的生化途径为()、()途径和()。