首页
登录
职称英语
The great advance【C1】______rocket theory 40 years ago showed that liquid-fue
The great advance【C1】______rocket theory 40 years ago showed that liquid-fue
游客
2025-01-22
19
管理
问题
The great advance【C1】______rocket theory 40 years ago showed that liquid-fuel rockets were far【C2】______in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known.【C3】______, during the last decade, large solid-fuel rockets with【C4】______fuels about as powerful as liquid fuels have【C5】______their appearance, and it is a favorite layperson’s question to【C6】______which one is "better". The question is meaningless.【C7】______might as well ask whether a gasoline or a diesel engine is "better". It all【C8】______on the purpose. A liquid-fuel rocket is complicated,【C9】______has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when【C10】______.【C11】______, the thrust can be made to vary by adjusting the speed of the fuel pumps. A solid-fuel rocket, on the other hand, is rather【C12】______in construction,【C13】______hard to build when a really【C14】______size is desired. But once you have a solid-fuel rocket, it is ready for action【C15】______very short notice. A liquid-fuel rocket has to be fueled first and cannot be【C16】______readiness for very long after it has been fueled.【C17】______, once a solid-fuel rocket has been ignited, it will keep burning. It cannot be stopped and reignited【C18】______desired(it could conceivably be stopped and reignited after a pre-calculated time of burning has e-lapsed. and its thrust cannot be varied. Because a solid-fuel rocket can be kept ready for a long time, most military missiles【C19】______solid fuels, but human-piloted spaceflight needs the fine adjustments that can【C20】______be provided by liquid fuels. [br] 【C10】
选项
A、desired
B、asked
C、ordered
D、need
答案
A
解析
ask和order都应以人为宾语,need未用被动语态,所以应选desired。
转载请注明原文地址:https://tihaiku.com/zcyy/3923283.html
相关试题推荐
YoungJohnshowednoconsistencywhenhedidexcellentworkthefirstpartofth
Hewaslookingimpatientatthevisitingsalesman,whoshowednosignsofgettin
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
Thegreatadvance【C1】______rockettheory40yearsagoshowedthatliquid-fue
随机试题
A.techniqueB.processesC.testedD.procedure
Weareplanningtoprovide(serve)________tosmallcompaniesinthecity.servic
[originaltext]M:Thisishopeless.Thesefiguresstilldon’taddupright.Let’
Afteryearsofpromisesandfalsestarts,booksellersandtechnologycompanie
A.2.17kN/㎡ B.5.22kN/㎡ C.9.80kN/㎡ D.0
对于一些高科技企业和服务性企业来说,不适宜采用资产基础法评估企业价值。原因不包括
下列除哪项外,均用扣锅煅法炮制A.丝瓜络B.灯心草C.荷叶D.蜂房E.大蓟
根据美国著名营销学家贝里等专家的研究,服务质量的评价标准因素包括( )。A.有
金融自由化最直接的原因是( )。A.经济自由化决定的 B.国际经济发展的必然
患者,男,54岁,以“咳嗽、不适、呼吸困难和喘息、咳痰逾3日”就诊,患者无基础疾
最新回复
(
0
)