What fuels does the rocket thruster use? What are the disadvantages of the hypergolic engines?

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问题 What fuels does the rocket thruster use?
What are the disadvantages of the hypergolic engines?

选项 A、Their use of exotic fuels with a matched oxidizer.
B、Their use of hypergolic fuels which can easily evaporate.
C、Their requirement of containing fuels at room temperature in pressurized tanks.
D、Their short impulse and requirement of using toxic compounds.

答案D

解析

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本试题收录于：公共英语五级笔试题库公共英语（PETS）分类

公共英语五级笔试

公共英语（PETS）

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What fuels does the rocket thruster use? What are the disadvantages of the hypergolic engines?

公共英语五级笔试

公共英语（PETS）

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TheFamilyThestructureofafamilytakesdifferentformsaroundtheworldandeveninthesamesociety.Thefamily’sformc

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FindingaJobAtsixteenRonMackiemighthavestayedatschool,butthefuturecalledtohimexcitedly."Getoutoftheclas

FindingaJobAtsixteenRonMackiemighthavestayedatschool,butthefuturecalledtohimexcitedly."Getoutoftheclas

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