下列不属于主动吸收特点的是()。
A.有选择性
B.逆浓度梯度
C.消耗能量
D.顺浓度梯度
参考答案:D
In 2002, the Chinese government ______ a law stating whoever deserts girl babies would be punished by law.
A.distributed
B.favored
C.declared
D.resigned
将图所示的螺旋测微器的读数写出来.
甲.______mm 乙.______cm