输卵管卵巢囊肿常与哪项疾病有关（）
A.子宫内膜炎
B.盆腔感染
C.子宫颈炎
D.异位妊娠
E.卵巢手术史
参考答案：B
Software maintenance is to do necessary modification,supplenemt, and completeness during software life circle. Among the following vary kinds of maintenance,which one has the maximum workload in a general way
A． relevance maintenance
B． completeness maintenance
C． correctness naintenance
D． other kinds of maintenance
构造运动的证据有哪些？
