Two navigational hazards are located near to each other，but each is marked by an individual cardinal buoyage system. The buoys of one cardinal system may be identified from the other system by（）. the differing light colors。 one system having odd numbers while the other system has even numbers。 one system using horizontal bands while the other system uses vertical stripes。 the difference in the periods of the light。
009081账户冻结入口交易借方全额冻结对应的是（）。 只取不存。 只存不取。 不存不取。 部分不取。
下列关于南唐画家巨然说法正确的是（）。 主要作品有《秋山问道图》轴、《万壑松风图》轴、《层岩丛树图》轴等。 作品有水墨和设色两种画法，但在设色画中以水墨为主体。 董源和巨然同被称为南方山水画派。 师从董源。
Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（） They conduct heat poorly。 They are expensive。 They cannot be replaced。 They require special tools for removal。
This is（）where we shall anchor. the light-house。 the anchorage。 the pilot station。 the light-buoy。
在Windows的资源管理器中，选定某一文件夹，再选择“文件”菜单的“删除”命令，则（）。
