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【简答题】
求 ，其中 x=rcosφ, y=rsinφ, z=z,(r，φ，z)∈D (1) D={(r,φ，z):0＜α≤r≤R,0≤φ≤2π-δ,|z|≤H，0＜δ＜2π}
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【简答题】完形填空。 I know a black boy called l . His father is a farm worker. He works in a big 2 in the middle of America. Tom's parents work hard for the family day and night,but they get _ 3 money. So they are ...
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【单选题】骨与关节结核的手术适应证为( )
A.
年龄过大或过，J
B.
有其他脏器活动性结核病变
C.
抗结核治疗在2周之内
D.
全身中毒症状严重，抗结核药物效果不佳
E.
窦道流脓经久不愈
【单选题】骨与关节结核的手术适应证为
A.
窦道流脓经久不愈
B.
年龄过大或过小
C.
有其他脏器活动性结核病变
D.
抗结核治疗在2周之内
E.
全身中毒症状严重，抗结核药物效果不佳
【单选题】sausage [5sCsidV]
A.
n. 香肠, 腊肠
B.
n. 沙司, 酱油, 调味料 vt. 调味, 使增加趣味
C.
n. 糊, 面团, 黏土团 vt. 用浆糊粘, 张贴 n. 粘贴
D.
n. 馅饼, 杂乱, 喜鹊, 爱说话的人 vt. 弄乱
【简答题】完形填空。 I know a black boy called 1 . His father is a farm worker. He works in a big 2 in the middle of America. Tom's parents work hard for the family day and night, but they get 3 money. So they are 4...
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