悬吊直径≤150mm的悬吊式雨水管道的检查口或带法兰堵口的三通的间距不得大于( )mm。
A．5B．10C．15D．20
参考答案：C
In many American universities, the total work for a degree _____ thirty-six courses,
each _____ for a term.[ ]
A. consists of; lasting
B. is consisted of; lasts
C. is made up of; lasts
D. makes up of; lasting
下列关于内生肌酐清除率的叙述，正确的是
A．肾功能严重损害时，开始升高
B．高于80ml/min提示预后不良
C．肾功能损害愈重，其清除率愈低
D．肾功能损害愈重，其清除率愈高
E．其测定与肾功能损害程度无关
