【单选题】酒是一种有机化合物,它是用古物、水果等含淀粉或糖分的植物经过蒸馏、陈酿等方法生产的、含食用酒精的90、
【判断题】矿物成分相同的岩石,一般矿物颗粒越粗,抗风化能力越强。
【简答题】同一平面内,不相交的两条直线叫做平行线.______.(判断对错)
【单选题】S1:M.V. Helper, this is M.V. Blue Whale. What is the result of search? Over.S2:M.V. Blue Whale, this M.V. Helper. Sighted persons in water in position 47°N 050°W. Over.S1:M.V. Helper, this is M.V. Bl...
A.
She's has picked up five lifejakets.
B.
She's has picked up five persons.
C.
She's has picked up five life boats.
D.
She's has picked up five life rafts.
【单选题】客户保持率是指企业与老客户保持交易关系的比例,也可理解为( )