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【判断题】
平面与圆球相交,截交线的空间形状是椭圆。 ( )
A.
正确
B.
错误
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举一反三
【多选题】旅行社经营实行许可制度,旅游主管部门可以许可经营的业务类型包括( )。
A.
境内旅游
B.
入境旅游
C.
出境旅游
D.
边境旅游
E.
太空旅游
【多选题】旅行社可以经营的业务包括( )。
A.
境内旅游
B.
出境旅游
C.
入境旅游
D.
边境旅游
【单选题】Your grandpa had lived here for 50 years before he moved to London, _____? [     ]
A.
was it
B.
did he
C.
had he
D.
hadn't he
【简答题】汉译英:我不会因为失败而绝望地放弃自己的理想。(in despair)
【单选题】Mr Smith __________in London for a few years before he _____to China.
A.
lives; came
B.
has lived; came
C.
had lived; comes
D.
had lived; came
【单选题】On the cross-section that is exerted a concentrated couple m for the beam,.
A.
there is a sudden jump in value in Q diagram, but no change in M diagram
B.
there is a sharp angles in Q diagram, and a sudden jump in value in M diagram
C.
There is no change in Q diagram, but a sudden jump in value in M diagram
D.
There is a sharp angle in Q diagram, and no sudden jump in value in M diagram
【单选题】发光二极管与普通二极管一样是由一个( ) 结 组成,也具有单向导电性 。
A.
CD
B.
PN
C.
PM
D.
RN
【简答题】楔状交层理(Wedge-shaped cross bedding)
【简答题】经过整整一个月的休整,各位小友是否恢复元气,准备好新学期的战斗了呢? 2020年的开局并不美好,瘟疫肆虐,病痛横行,还来不及好好道别,很多生命就戛然而止。 悲痛否,愤怒否,茫然否,绝望否? 一切都有,又不全然。 还有隐隐期盼,点点希望, 一切,皆取决于你我。 更多的不幸,在世界各地发生,就让我们从了解世界开始,走进我们的听力练习吧。 60 secs 2.06 .mp3 Listen and...
【简答题】独一无二的风格 ________ style 濒危物种 ________ species 有...罪 be guilty ________ 与...有冲突,矛盾 be in conflict ________ 区分对错 distinguish right _________ wrong 对...造成威胁 ________ a threat to sth. 对...感到焦虑 be anxio...
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