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举一反三
【单选题】组成木脂素的单体基本结构是( )。
A.
C 5 – C 3
B.
C 5 –
C.
4 C C 6 – C 3
D.
C 6 – C 4
E.
C 6 – C 6
【单选题】My mother can't get __________ because she has rheumatism(风湿病).
A.
about
B.
on
C.
through
D.
in
【单选题】My mother felt unhappy just now, she? [     ]
A.
didn't
B.
wasn't
C.
did
D.
was
【简答题】My mother goes to (去) the food shop every day. 31 has to buy many 32 of food because(因为) she has three children, one son and two 33 . I am her 34 . After school, I can help her do the housework(家务). T...
【单选题】组成木脂素的单体基本结构是( )。
A.
C5-C3
B.
C5-C4
C.
C6-C3
D.
C6-C4
【单选题】组成木脂素的单体基本结构是
A.
C6 – C3– C3
B.
C6 – C3
C.
C6 – C3 –C6
D.
C5
【单选题】My mother has felt the need to talk about him only since he .
A.
died
B.
dies
C.
dying
【单选题】铸造全冠预备时,轴壁正常聚合角及颈部肩台要求
A.
0°无肩台
B.
2°~5°,0.5~0.8mm
C.
2°~5°,0.8~1.5mm
D.
6°~10°,0.8~1.5mm
E.
6°~10°,1.5~2.0mm
【单选题】组成木脂素的单体基本结构是
A.
C5-C3
B.
C5-C4
C.
C6-C3
D.
C6-C4
E.
C6-C6
【单选题】铸造全冠预备时,轴壁正常聚合角及颈部肩台要求是
A.
2° ~5°  无肩台
B.
2° ~5°  O.5~0.8mm
C.
2° ~5°  0.8~1.5mm
D.
6° ~8°  0.8~1.5mm
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