logo - 刷刷题
下载APP
【单选题】

狮子座流星雨的母彗星是( )

A.
坦普尔-塔特尔
B.
鹿林
C.
LOVEJOY
D.
恩克
举报
题目标签：彗星狮子座流星
参考答案：
参考解析：
.
刷刷题刷刷变学霸
举一反三

【判断题】深度撞击任务可分为五个阶段完成,分别是探测器发射、试运行检测、巡航飞行、接近彗星、撞击彗星。()
A.
正确
B.
错误
查看完整题目与答案

【简答题】阅读理解。 Millions of years ago there were many types of dinosaurs on earth. Most dinosaurs were plant-eaters. The Apatosaurus, for example, had a long thin neck so that it could eat leaves from trees....
查看完整题目与答案

【单选题】周期性彗星的轨道为()
A.
椭圆
B.
抛物线
C.
双曲线
D.
正圆
查看完整题目与答案

【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
查看完整题目与答案

【单选题】产生'彗星'征的伪像，也叫做
A.
混响伪像
B.
多次内部混响伪像
C.
部分容积效应
D.
声速失真伪像
E.
镜像伪像
查看完整题目与答案

【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
查看完整题目与答案

【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
查看完整题目与答案

【简答题】Directions: In this section there is a passage in English. Translate the five sentences under-lined into Chinese and write your translation on ANSWER SHEET 2.56. When you are in the business of sendin...
查看完整题目与答案

【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 (62) our protective blanket on (63) . Light gets throug...
A.
[A] with [C] under
B.
[B] from [D] for
查看完整题目与答案

【简答题】读图，完成下题。 小题1:图中太阳电池的运行轨道属于 A．恒星轨道 B．彗星轨道 C．行星轨道 D．卫星轨道 小题2:图中开发的能源类型是 A．太阳风 B．核能 C．太阳能 D．光能
查看完整题目与答案