低视力(1级)()。
A.较好眼的最佳视力为0.1~0.3
B.较好眼的最佳视力为0.05~0.1
C.无光感
D.视野半径≤10°,但>5°
E.视野半径≤5°
参考答案:A
当水源受有机物和细菌严重污染时,应选用的消毒法是()
A.普通氯化消毒法
B.氯胺消毒法
C.折点氯消毒法
D.过量氯消毒法
E.有效氯消毒法
The house I grew up _______ has been pulled down and replaced by a hospital.
A.in it
B.in
C.in that
D.in which