Helen has _______ beef of us all. [ ]
A. less
B. least
C. the least
D. the fewest
答案:C
下列哪个硬件故障时不会导致驻波比告警()
A.CU
B.DU
C.TRXC
D.天线
基土严禁用()做为填土。
A.淤泥
B.腐殖土,耕植土
C.膨胀土、冻土
D.含有机物质小于8%的土
E.含有机物质大于8%的土