肥猪瘦肉脂肪含量约为()。
参考答案:6.63%
These flowers are pleasant to ______.
A.be looked at
B.look at
C.looking at
D.for looking at
扑救露天堆垛火灾时,应实施()的战术措施,消灭火灾。
A.冷却防爆、强攻近战
B.冷却保护,攻防并举
C.分段合击、区域窒息
D.以阵地战为主