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
18
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] 【C6】
选项
A、wonder
B、acquire
C、inquire
D、judge
答案
C
解析
与前面question相照应,此处应是“问”的意思,只有inquire是最佳答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3923279.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
[originaltext]M:Sorry,Ican’tgojoggingwithyoutoday.Thereseemstobeso
下列哪项属于同接卫生费用?A.营养费 B.检查费 C.药费 D.材料费
下列各项中,不属于一次凭证的是()。A.销售商品时开具的增值税专用发票 B.购
关于制定预算的描述,不正确的是()。A.成本基准是经过批准且按时间段分配的
霍奇金淋巴瘤特征性的热型是A、间歇热 B、稽留热 C、弛张热 D、周期性发
危急缺陷处理不超过()。24小时$;$1周$;$1个月$;$36小时
长期国债的偿还期限一般为()。A:5年以上B:10年C:15年以上D:10
证券公司的设立申请在获得批准后,申请人应当先申请设立登记,领取营业执照然后向证监
反映商业银行对贷款损失的弥补能力和对贷款风险的防范能力的关键风险指标是()。A
取源部件安装完毕后,应随同管道进行()。A.压力试验 B.吹扫清洗 C
最新回复
(
0
)