首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The great advance【C1】______rocket theory 40 years ago showed that liquid-fuel rockets were far【C2】______in every respect to the
The great advance【C1】______rocket theory 40 years ago showed that liquid-fuel rockets were far【C2】______in every respect to the
admin
2015-02-17
20
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.
【C20】
选项
A、not
B、all
C、enough
D、only
答案
D
解析
前文已经提到液体燃料火箭有操作起来得心应手的优点,所以此处所说的可以有细微调节功能的人类驾驶的航天飞机必定是液体燃料提供助力。
转载请注明原文地址:https://kaotiyun.com/show/5igO777K
本试题收录于:
CATTI二级笔译综合能力题库翻译专业资格(CATTI)分类
0
CATTI二级笔译综合能力
翻译专业资格(CATTI)
相关试题推荐
ManypeoplefindStanleyJordan’smusicentertaining.Listeningtoithelpsthemtorelaxandto_____thetensions
ThewaveofstrikesthathasgrippedFranceforamonthshowedsomesignsofabatingyesterdayasprisonofficersagreedtogob
Theyoungmantookgoodcareofpublicpropertyand_________agoodexampletoallofus.
Startingaconversationisaseasyforsomepeopleaseatingandbreathing.However,ifyousufferfromsocialanxietydisorder
Newtechnologylinkstheworldasneverbefore.Ourplanethasshrunk.It’snowa"globalvillage"wherecountriesareonlyseco
A、正确B、错误A根据原文“Shefoundworkasanother’shelper,caringfortwoyoungchildreninreturnforroom,boardandthreedollarsaw
You’vebeensohelpful!HowcanImakeuptoyou?
Threeyears______beforehereturnedhomefromtheUnitedStates.
You’rebeensohelpful!HowcanImakeuptoyou?
Fewpleasurescanequalsuchofacooldrinkonahotday.
随机试题
被誉为中国人民的大宪章、起着临时宪法作用的是________。
按是否使用语言,可将沟通分为()。
依据《固体废物污染环境防治法》,企事业单位对其产生的不能利用的工业固体废物,正确的做法是()。
关于建设工程见证取样的说法,正确的是()。
下列关于注册建造师执业工程规模标准(公路工程)说法中错误的是()。
2004年12月1日甲公司接受捐赠不需要安装的管理用设备一台,根据捐赠方提供的有关单据注明该设备价值为200000元,根据设备新旧程度,估计其价值损耗为30000元(假定与税务部门核定额相同),甲公司接受捐赠时以银行存款支付该设备运杂费10000元。
食品标签上营养素含量若标注有“来源”、“含有”、“提供”等词语的声称属于含量声称。
撰写公文必须要选择适宜的行文方式,一般不得()。
下列国家机构中,属于国务院直属机构的是()。
A、Buyhimarecord.B、Sendhimabook.C、Writeapoemforhim.D、Givehimarecorder.A
最新回复
(
0
)