户用沼气室内管道的布局要求是什么？
参考答案：要求外观整齐，便于操作和维修，并避免敷设在阳光直射、高温、冰冻和易受外力冲击的地方。
直输机一工况、二工况出口管径（）
A.一样大
B.一工况大
C.二工况大
An analyst does research about currency swap and stated that, in the typical currency swap, principal amounts are exchanged at both the beginning and end of the swap and interest payments are netted during the life of the swap. The analyst is most accurate with respect to:（）
A.A
B.B
C.C
