下面 () 不是 XMLHttpRequest 对象的方法。 @font-face { font-family: 宋体; }@font-face { font-family: 宋体; }@font-face { font-family: "@宋体"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: "Times New Roman", "serif"; }.MsoChpDefault { font-size: 10pt; }div.WordSection1 { } A. open() @font-face { font-family: 宋体; }@font-face { font-family: 宋体; }@font-face { font-family: "@宋体"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: "Times New Roman", "serif"; }.MsoChpDefault { font-size: 10pt; }div.WordSection1 { } B. send() @font-face { font-family: 宋体; }@font-face { font-family: 宋体; }@font-face { font-family: "@宋体"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: "Times New Roman", "serif"; }.MsoChpDefault { font-size: 10pt; }div.WordSection1 { } C. readState() @font-face { font-family: 宋体; }@font-face { font-family: 宋体; }@font-face { font-family: "@宋体"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: "Times New Roman", "serif"; }.MsoChpDefault { font-size: 10pt; }div.WordSection1 { } D. responseText() @font-face { font-family: 宋体; }@font-face { font-family: 宋体; }@font-face { font-family: "@宋体"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: "Times New Roman", "serif"; }.MsoChpDefault { font-size: 10pt; }div.WordSection1 { }