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【单选题】
有一频率【图片】的均匀平面波，垂直入射到海面上，设电场在海平面上的振幅值为1V/m，海水的率【图片】，相对介电常数【图片】。求在海平面下0.6m处，电场的振幅是多少？（）A.
E (0.6)=0.927 (V/m)。
B.
E (0.6)=0.827 (V/m)。
C.
E (0.6)=1.927 (V/m)。
D.
E (0.6)=1.027 (V/m) 。
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举一反三
【单选题】By and by, _____ go out to contact other people in person, more and more people tend to socialize with others via electronic devices.
A.
other than
B.
rather than
C.
more than
D.
less than
【简答题】The past-oriented people tend to look at the world in a______.
【简答题】Lonely people can easily become lonelier because they tend to ______.
【简答题】People in the west tend to verbalize their gratitude and compliments less than Chinese speaker.()
【单选题】Shy people tend to misinterpret other people's facial expressions.（ ）
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】o____ n. 障碍(物),妨碍
【判断题】Companies tend to hire people they know or who are introduced to them by someone they trust.()
A.
正确
B.
错误
【单选题】With the influence of the black and white media, ______.
A.
people tend to have fewer dreams
B.
the subject of people's dreams changed a lot
C.
people's idea about dream forms were affected
D.
people's dreams tend to be more active
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