围护结构的附加耗热量，应按( )确定。
A．建筑物总负荷 B．房间负荷C．围护结构负荷 D．其占基本耗热量的百分率
参考答案：D
My father _________ Beijing on business for three days. He will be back in two days.
A．have gone to
B．has gone to
C．has been to
D．has been in
外周血中单核细胞总数增多见于()
A.黑热病
B.亚急性感染性心内膜炎
C.疟疾
D.传染性单核细胞增多症
E.急性感染恢复期
