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【简答题】
2 Complete the sentences. ► There are billions of stars in the universe . 1 Is it important to send rockets into ____? 2 The earth revolves around the sun: in other , earth is a planet in our solar system. 3 The Venus Express rocket took ____ five months to ____ the planet Venus. 4 The idea of human life on Mars is far-____. 5 We have ____ a lot of knowledge about the solar system in recent years. 6 The earth ____ around the sun every 365 days. 7 My ____ of space is very limited. I'd like to learn more about it. 8 The moon is a ____ of the earth.
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【单选题】Dialogue 3 The new necklace -----
A.
was bought by herself
B.
was given to her as a present
C.
was handed down to her from her mother
【简答题】D3. The new necklace _______________. A)was bought by herself B)was given to her as a present C)was handed down to her from her mother
【单选题】电动势不能用伏特计测量,而要用对消法,这是因为
A.
伏特计使用不方便
B.
伏特计不精确
C.
伏特计本身电阻太大
D.
伏特计只能测出端电压，不能满足电池的可逆工作条件
【单选题】电池的电动势不能用伏特计测量,因为
A.
伏特计测的结果不准确
B.
伏特计要并联在电路中，检流计要串联在此两者的要求不能同时满足
C.
适用伏特计是电池内有电流通过，测得的不是电动势
D.
用伏特计精确度达不到要求
【简答题】圆角的快捷命令是
【简答题】为什么不能用伏特计测量电池的电动势?
【单选题】用户访问万维网文档,万维网文档之间的链接,以及将万维网文档中的数据传送到 用户计算机,实现这些功能所采用的协议是
A.
ICMP
B.
SNMP
C.
HTTP
D.
IMAP
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