金属在干燥条件下或理想环境中不会发生腐蚀。
Which statement is true?() A flow layout can be used to position a component that should resize horizontally when the container is resized.。 A grid layout can be used to position a component tat should maintain a constant size even when the container is resized.。 A border layout can be used to position component that should maintain a constant size even when the container is resized.。 The grid bag layout can be used to give a grid-like layout which differs from the normal grid in that individual rows and columns can have unique sizes.。 If two components are placed in the same column of a grid bag layout, and one component resizes horizontally, then the other component must resize horizontally.。
要缩放表格时,在页面视图上,将指针置于表格右下角控点上,直到出现一个()。将表格的边框拖动到所需尺寸即可。 垂直箭头。 水平箭头。 双向箭头。 单向箭头。
通常情况下,磁选方法难于回收()的磁性矿物。 粗粒。 微细粒。 细粒。 较细粒。
()年,第一条日后被称为“牛仔裤”的帆布工装裤在李维·施特劳斯手中诞生了。 1851。 1852。 1853。 1854。
平均分子量在210~240间的石油馏分是()。