首页
登录
职称英语
A project likely to evolve in. the near or intermediate future is space tour
A project likely to evolve in. the near or intermediate future is space tour
游客
2024-06-06
10
管理
问题
A project likely to evolve in. the near or intermediate future is space tourism, a purely【B1】______ activity that would not have to rely on unpredictable government decisions. It would 【B2】______ put space operations on a much more solid, dependable footing and would enormously【B3】______ man’s space activity. While some people see space tourism as a【B4】______ multibillion-dollar business, difficult technical problems remain to be【B5】______
First, a manned reusable rocket like the Venture Star must be built. Then, a second serious problem must be【B6】______ : even today’s most-advanced space rockets are able to【B7】______ only about 2.5% of their launch weight into orbit-- a ratio that has hardly changed in the last 40 years. This fact is a result of the【B8】______ of material characteristics and chemical power sources, and【B9】______ .
Today the price of a ticket to space would have to be at least $ 50 000. It is questionable【B10】______ . However, space tourism may become more attractive once space facilities are built【B11】______ . [br] 【B8】
选项
答案
limits
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3622755.html
相关试题推荐
TheGeodesicDome(圆顶屋)--theHouseoftheFuture?R.
TheGeodesicDome(圆顶屋)--theHouseoftheFuture?R.
TheGeodesicDome(圆顶屋)--theHouseoftheFuture?R.
TheGeodesicDome(圆顶屋)--theHouseoftheFuture?R.
TheGeodesicDome(圆顶屋)--theHouseoftheFuture?R.
Whenyoustopsmoking,you’relikelytofeeltense,nervous,irritable,anxi
Whenyoustopsmoking,you’relikelytofeeltense,nervous,irritable,anxi
Whenyoustopsmoking,you’relikelytofeeltense,nervous,irritable,anxi
Aprojectlikelytoevolvein.thenearorintermediatefutureisspacetour
Aprojectlikelytoevolvein.thenearorintermediatefutureisspacetour
随机试题
AwaveofeffortstocarryforwardtraditionalcultureissweepingChinanationw
Aftertheinvestigation,itwasconcludedthattheoldmanwasresponsibleforth
在与客户签订合同时,可以增加一些条款,如限定客户提出需求变更的时间,规定何种情况
Onceourchickensstartedlayingeggs,w
股静脉穿刺的准确体位是A.仰卧,屈膝 B.仰卧,下肢伸直略外展外旋 C.仰卧
怀疑血友病,首选的试验是()。A.BT B.PLT C.PT D.F
无牙颌牙槽嵴终身持续吸收,一般每年为( )。A.0.5mm B.0.8mm
A.口腔黏膜可见边界清楚的红斑,伴口角黏膜糜烂、皲裂 B.有服用大剂量抗生素病
下列有关建设工程各阶段工作内容的表述中,正确的有()。A.批准的项目建议书是工
婴儿腹泻病为了纠正循环衰竭和改善肾血流,扩容阶段用2:1等张含钠液的正确方法是A
最新回复
(
0
)