写成《制碱》一书,发明“侯氏制碱法”的化学家是:
侯德榜
This book will show you ________ can be used in other contexts.
A.how you have observed
B.how what you have observed
C.that you have observed
D.how that you have observed
下列各项中,不属于行政行为效力的有()。
A.确定力
B.拘束力
C.公定力
D.强制性