Lb4A3279.水准仪S10、S3、S1及S05,其精度最高和最低的为()
A.S10、S05
B.S1、S3
C.S123.L、S4
D.S05、S10
D、S05、S10
A.S10、S05
B.S1、S3
C.S123.L、S4
D.S05、S10
D、S05、S10
第5题
Finding the resources to meet this demand in a 【S2】________, sustainable way is the cornerstone of our nation’s energy security, and will be one of the major 【S3】________ of the 21st century. Alternative forms of energy --- bio-fuels, wind and solar, to name a few --- are 【S4】________ being funded and developed, and will play a growing 【S5】________ in the world’s energy supply. But experts say that, even when 【S6】________, alternative energy sources will likely meet only about 30% of the world’s energy needs by 2050.
For example, even with 【S7】________ investments, such as the $93 million for wind energy development 【S8】________ in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels 【S9】________ only about 1% of the market today. Energy and sustainability experts say the answer to our future energy needs will likely come from a lot of 【S10】________ --- both traditional and alternative.
A stable B solutions C significant D role E progress
F marvelous G included H growth I exactly J consist
K comprise L competitions M combined N challenges O certainly
【S1】
【S2】
【S3】
【S4】
【S5】
【S6】
【S7】
【S8】
【S9】
【S10】
请帮忙给出每个问题的正确答案和分析,谢谢!
第11题
A.水准仪的主要功能是测量两点间的高差h
B.水准仪不能直接测量待定点的高程H,但可由控制点的已知高程来推算测点的高程
C.利用视距测量原理,水准仪可以测量两点间的水平距离D
D.S10型水准仪称为精密水准仪,用于国家一、二等水准测量及其他精密水准测量
E.S1型水准仪称为普通水准仪,用于国家三、四等水准测量及一般工程水准测量