矩形控制网的角度允许误差为(),边长为()。
A.±20″
B.±10″
C.1/5000
D.1/10000
参考答案:A, D
–How old is your daughter?
-- ______ . We had a special party for her _____ birthday last week.
A.Ninth; ninth
B.Nine ; nineth
C.Ninth; nine
D.Nine; ninth
腭裂术后的饮食要求为()
A.术后半流
B.术后流食,1周后改半流
C.术后流食,半月后改半流
D.术后1周可进普食
E.术后1周禁食,静脉补给能量