下列定积分中积分值为0的是( ).
A、<span lang="EN-US" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-size: 9pt; font-family: 宋体;"><span style="position: relative; top: 12pt;"><img width="68" height="33" src="blob:http://degree.qingshuxuetang.com/40e74a05-a325-4972-98f7-ad41b601e8b6" v:shapes="_x0000_i1025"></span></span><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: -webkit-standard; font-size: medium;"></span><br>
B、<span lang="EN-US" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-size: 9pt; font-family: 宋体;"><span style="position: relative; top: 12pt;"><img width="69" height="33" src="blob:http://degree.qingshuxuetang.com/bdd32e84-31e0-4e06-b5fe-de69424e253b" v:shapes="_x0000_i1025"></span></span><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: -webkit-standard; font-size: medium;"></span><br>
C、<span lang="EN-US" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-size: 9pt; font-family: 宋体;"><span style="position: relative; top: 11pt;"><img width="85" height="28" src="blob:http://degree.qingshuxuetang.com/770f46ef-cd5a-4757-8fcc-29c3bcdb9b6c" v:shapes="_x0000_i1025"></span></span><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: -webkit-standard; font-size: medium;"></span><br>
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