先天性内斜视的手术时机多选择在()前
A.3岁
B.4岁
C.1岁
D.2岁
E.6个月
参考答案:C
解析:先天性内斜视的手术时机多选择在2岁前手术,以增加获得双眼单视的机会。
He didn't work hard. _____, he failed his exam again. [ ]
A. As a result
B. As a result of
C. In spite of
D. As a matter of fact
在机组启动时怎样才能缩短暖管升压及启动时间?