原发性肺结核的常见播散方式是（）
A．淋巴道播散
B．血路播散
C．二者均有
D．二者均无
参考答案：C
Kangkang has ____ many good friends ____ he is very happy. [ ]
A. so, that
B. such, that
C. not, until
D. not, but
机组UPS的额定容量为多少（）
A.38KVA
B.60KVA
C.80KVA
D.120KVA
