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【单选题】
哌替啶比吗啡应用多的原因是
A.
无便秘作用
B.
呼吸抑制作用轻
C.
成瘾性较吗啡轻
D.
作用较慢,维持时间短
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【单选题】以年龄 ( 岁 ) 为例,最常用的组段表示法是
A.
0 ─ 5 , 5 ─ 10 , 10 ─ 15 , 15 ─ 20
B.
0 ─, 5 ─, 10 ─, 15 ─„„;
C.
0 ─4, 5 ─ 9 , 10 ─ 14 , 15 ─ 19 „„;
D.
─ 5 ,─ 10 ,─ 15 ,─ 20 „„;
E.
以上都不是;
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A.
生产成本和期间费用
B.
直接费用与间接费用
C.
可变成本与固定成本
D.
沉没成本与机会成本
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A.
bright
B.
magic
C.
unforgettable
D.
lucky
【判断题】骨中的有机物可以使骨变得有一定的硬度
A.
正确
B.
错误
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A.
正确
B.
错误
【单选题】以年龄(岁)为例,最常用的组段表示法是
A.
0─5, 5─10,10─15, 15─20……;
B.
0─ , 5─ ,10─ , 15─ ……;
C.
0─4, 5─9, 10─14, 15─19……;
D.
─5, ─10,─15,─20……;
E.
以上都不是;
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