【判断题】PS中当使用绘图工具时,按Alt键可以暂时切换为吸管工具。
【单选题】在A点进行视距测量,A点的高程为HA=1918.380m,仪器高i=1.40m,测得视距为36.8m。现在B点立尺,中丝读数为1.45m,垂直角为87°16′,则B点的高程为()。
【单选题】在 A 点进行视距测量, A 点的高程为 H A =1918.380m ,仪器高 i = 1.40m ,测得视距为 36.8m 。现在 B 点立尺,中丝读数为 1.45m ,垂直角为 87 °16′ ,则 B 点的高程为 。
【单选题】The ancient Egyptian water clock required sophisticated calibration, since water dripped faster from its bowl when ______ and the pressure was greater.
【单选题】A.An ancient building.B.A world of antiques.C.An Egyptian museum.
【多选题】高压阀型避雷器或低压阀型避雷器都是由()组成,装在密封的瓷套管内。
【单选题】Cairo, the cradle of civilization, the Melting Pot of Ancient and Modern Egyptian Civilizations. It is the largest city in the Middle East and lies at the center of all routes leading to and from the ...
A.
the largest city in three continents
B.
the financial center of the world
D.
the youngest city in middle east
【简答题】The ancient Egyptian civilization thrives in the desert mainly because of the influence of ______ from the Nile.