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【多选题】
关于次卧室及书房,下面哪些是正确的?A.
次卧室开间：中等户型以上次卧室开间不宜小于3.2MM，
B.
次卧室开间：大户型不宜小于3.3M。
C.
书房与儿童房开间：不应小于2.4M。
D.
儿童房开间：不应小于2.7M。
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举一反三
【单选题】关于感染过程中潜伏性感染特点的叙述，正确的是
A.
迅速引起显性感染
B.
一旦免疫功能下降可引起显性感染
C.
病原体不断排出体外
D.
病原体侵入人体后，潜伏在各个部位
E.
每种感染性疾病均有潜伏性感染
【单选题】Tom is said________ abroad, but I don’t know what country he studied in.
A.
to have studied
B.
to study
C.
to be studying
D.
to have been studying
【单选题】Tom is said ______ abroad , but I don’t know what country he studie d in.
A.
to have studied
B.
to study
C.
to have been studying
D.
to be studying
【单选题】Tom is said ______ abroad, but I don't know which country he studied in.
A.
to have studied
B.
to study
C.
to be studying
D.
to have been studying
【简答题】巧克力在多少温度下保存最好?
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