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提问人：网友xcxxlyx 发布时间：2022-01-07

[主观题]

A multi-stage rocket refers to ______ .A．several rockets which are separated from each oth

A multi-stage rocket refers to ______ .

A．several rockets which are separated from each other

B．a single rocket with enough fuel

C．the booster which is the biggest and can lift the whole rocket from the ground

D．a rocket with several parts, and each of which can help to push the spaceship into the space

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更多“A multi-stage rocket refers to ______ .A．several rockets which are separated from each oth”相关的问题

第1题

______ can send a spaceship into space.A．The boosterB．The second rocketC．The third rocketD

______ can send a spaceship into space.

A．The booster

B．The second rocket

C．The third rocket

D．The multi-stage rocket

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第2题

The condensing method is to use the condensing agent to condense the oil and gas through t

he heat exchanger. This process mainly adopts the method of multi-stage intermittent cooling to reduce the oil and gas temperature so as to achieve the purpose of oil and gas recovery.

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第3题

气井气体需经多级节流后进采气管线Gas well gas need to go through the multi-stage throttling gas pipeline.

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第4题

A firm which bottles shampoo selects some filled bottles for examination. The procedure us

ed is that two random numbers are chosen, x and y. Starting at the xth bottle filled, every bottle at an interval of y is then chosen for examination. Which BEST describes this type of sampling？

A、Multi-stage

B、Random

C、Systematic

D、Stratified

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第5题

火箭电泳（rocket electrophoresis or rocket immtmoelectrophoresis)。

火箭电泳(rocket electrophoresis or rocket immtmoelectrophoresis)。

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第6题

Up ______ into the air when the ten-second countdown was over.A．the rocket shotB．shot the

Up ______ into the air when the ten-second countdown was over.

A．the rocket shot

B．shot the rocket

C．was the rocket shot

D．the rocket was shot

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第7题

______ reported the rocket attacks.A．Two hospitalsB．Local newspapersC．A news agencyD．Leade

______ reported the rocket attacks.

A．Two hospitals

B．Local newspapers

C．A news agency

D．Leaders of the main factions

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第8题

The higher a rocket flies, ______air it meets.A．the fewerB．the littleC．the lessD．the much

The higher a rocket flies, ______air it meets.

A．the fewer

B．the little

C．the less

D．the much

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第9题

A． rocketB． knifeC． gunD． bullet

A.rocket

B. knife

C. gun

D. bullet

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第10题

According to the passage, the most difficult task of firing a rocket is ______ .A．to get t

According to the passage, the most difficult task of firing a rocket is ______ .

A．to get the rocket into the space

B．to calculate the rocket's velocity of escape

C．to guide the rocket after it leaves the Earth's surface

D．to identify the gravitational fields of the Earth and the moon

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