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"不为公众所知悉，能为权利人带来经济利益，具有实用性并经权利人采取保密措施的技术信息和经营信息"是《中华人民共和国反不正当竞争法》中（）的法律定义。
下列人员中，不属于信息系统基本开发人员的是（）。
设某种二叉树有如下特点；结点的子树数目不是两个，则是0个。这样的一棵二叉树中有m（m>0）个子树为0的结点时，该二叉树上的结点总数为（）。
Music can be divided into several categories, or groups. Some of them are. classical music, traditional music, rock music, and jazz music. The first group is classical music, which refers to (1) music that originated in Europe a few (2) years ago. Beethoven and Bach were two famous (3) of classical music. Classical music is usually played by a variety of (4) instruments, such as the violin and the cello, and by a variety of (5) instruments such as the flute and the saxophone. The second type is traditional music. Traditional music comes from a particular (6) . For example, "blues" music is one kind of (7) in the United States and "enka" music is one kind of traditional music in (8) Each culture has its own special instruments for (9) its traditional music. In some places, traditional music is also referred to as " (10) music". The third kind is rock music. Rock is generally a (11) kind of music and it is played with a strong (12) Rock musicians often use (13) instruments, such as electric guitars and electric pianos. Beginning in (14) about 60 or 80 years ago, rock music became very popular, especially among (15) people, during the 1960’s and 1970’s. Today, rock music still remains a (16) of the younger generation. The fourth kind of music is jazz. Jazz music is said to have originated in (17) It has a different kind of (18) from other kinds of music. A variety of musical instruments are used to play jazz music, such as the trumpet, the saxophone and the piano, as well as (19) instruments. You may find that many kinds of music nowadays are (20) of classical and traditional, or classical and jazz, or rock and jazz, and so on.
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