共有几个FCMC?()
A.1
B.2
C.3
D.4
参考答案:B
某品牌的碳酸氢铵(NH4HCO3俗名碳铵)化肥包装袋上印有如图标识.对该化肥的有关判断错误的是( )
A.农作物施用碳酸氢铵后叶色浓绿,生长茂盛
B.碳酸氢铵是一种复合肥料
C.碳酸氢铵保存时应注意防潮
D.50kg碳酸氢铵里氮元素的质量≥8kg
Now a single cell phone is able to store a large______of information about an individual life.
A. deal B. number C. amount D. account