皮下埋植剂取出术后的注意事项不包括()。
A.清点埋植剂的根数
B.测量每根皮埋剂的长度
C.核对每根皮埋剂的长度
D.记录埋植剂的外观和有无缺损
参考答案:B
My grandpa is in his seventies. He’s ____ to take the bus for free.
A.old enough
B.enough old
C.young enough
D.enough young
煤气发生站水煤气、半水煤气的含氧量(体积分数)达到( )时必须停炉。
A.0.5%
B.0.7%
C.1%
D.1.2%