排水当量是将一个()的排水量0.33l/s作为一个排水当量，其他卫生器具排水量与之相比的比值。
A.洗涤盆
B.洗脸盆
C.浴盆
D.大便器
参考答案：C
35. Many people agree that never in history a more splendid opening ceremony than that of the Beijing Olympics.
A．there were
B．has there been
C．there has been
D．were there
测定肠道转运时间可以采用（）。
A.食管通过显像
B.胃食管反流显像
C.标记乳糖试验
D.胃排空试验
E.肝胆动态显像
