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【单选题】
落到地面上的流星残余体叫什么？（）
A.
余流星
B.
残流星
C.
下流星
D.
陨石
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举一反三
【单选题】Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts (67) our protective blanket on (68) . Light gets through, ...
A.
from
B.
than
C.
as
D.
away
【单选题】当驾驶舱对地面进行呼叫时（）.
A.
外部电源控制面板上的COCKPIT CALL灯点亮，地面呼叫喇叭响
B.
外部电源控制面板上的COCKPIT CALL灯闪亮，地面呼叫喇叭响
C.
呼叫面板上的MECH灯点亮
D.
B和C
【单选题】Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars．The atmosphere again acts 【C1】______ our protective blanket on 【C2】______ ．Light gets...
A.
for
B.
with
C.
on
D.
as
【单选题】Space is a dangerous place, not only because of meteors(流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and...
A.
The Atmosphere and Our Environment
B.
Research on Radiation
C.
Effects of Space Radiation
D.
Importance of Protection Against Radiation
相关题目：
【单选题】Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts (67) our protective blanket on (68) . Light gets through, ...
A.
from
B.
than
C.
as
D.
away
【单选题】当驾驶舱对地面进行呼叫时（）.
A.
外部电源控制面板上的COCKPIT CALL灯点亮，地面呼叫喇叭响
B.
外部电源控制面板上的COCKPIT CALL灯闪亮，地面呼叫喇叭响
C.
呼叫面板上的MECH灯点亮
D.
B和C
【单选题】Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars．The atmosphere again acts 【C1】______ our protective blanket on 【C2】______ ．Light gets...
A.
for
B.
with
C.
on
D.
as
【单选题】Space is a dangerous place, not only because of meteors(流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and...
A.
The Atmosphere and Our Environment
B.
Research on Radiation
C.
Effects of Space Radiation
D.
Importance of Protection Against Radiation
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