无论m、n为何实数,直线y=-3x+1与y=mx+n的交点不可能在[ ]
A.第一象限
B.第二象限
C.第三象限
D.第四象限
答案:C
染色质和染色体是同一物质在细胞不同时期的表现形式。( )
The use of ()in many ways reduces staffing needs, minimizes in transit damage and theft, shorten time in transit because of reduced port turnaround time.
A.Container
B.Supertanker
C.Pallet
D.Integration