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【判断题】
π键比 σ 键更易受外电场的影响,极化度更大。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】Which city has the guest come to?
A.
Sydney.
B.
Australia.
C.
Wildlife Park.
D.
It isn ’ t mentioned.
【单选题】which city has the largest populationin China
A.
Beijing
B.
chongqing
C.
Guangzhou
D.
Shenzhen
【简答题】Ask _______ American which city has the worst air pollution,and the answer is sure to be Los Angeles. A.some B.every C.any D.all
【单选题】牛头刨床的主运动采用的是( )机构。
A.
曲柄摇杆
B.
摆动导杆
C.
双曲柄
【单选题】Which city has the biggest population in Canada?
A.
Toronto.
B.
Vancouver.
C.
Quebec.
D.
Ottawa.
【简答题】Look at the maps in the reading passage and answer the question. Which city has the greatest amount? Which has the least?
【单选题】牛头刨床的主运动采用的是( )机构。
A.
摆动导杆
B.
移动导杆
C.
曲柄摇块
【单选题】Which city has the nickname ‘big apple ’?
A.
New York
B.
Philadelphia
C.
Boston
D.
Washington D.C
【多选题】Which city has the major trading center for foreign exchange market?
A.
London
B.
New York
C.
Hongkong
D.
Singapore
E.
Tokyo
【单选题】牛头刨床的主运动采用的是( )机构。
A.
曲柄摇杆
B.
导杆
C.
双曲柄
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