下列选项中,不会导致环己酮肟加料不稳的是()。
A、肟管保温温度过高
B、肟过滤器堵塞
C、肟泵压力不稳
D、肟调节阀未全开
参考答案:D
无性生殖与有性生殖的根本区别在于,无性生殖( )
A.不能进行细胞分裂
B.没有两性生殖细胞的结合
C.由母体直接产生新个体
D.不能产生生殖细胞
—Excuse me, Mr. Johnson,could you tell me ______?
—Right on the table in the corner of the room. [ ]
A. where I can buy a book of English
B. when I can get to the book store
C. how I can get to the book store
D. where I can get my book of English