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【单选题】
NH 3 在硅铝胶上的红外吸收光谱可以看出表面上的两种类型的酸中心,其中L酸中心吸附NH 3 分子的IR带位于( )A.
3120 cm -1 及1450 cm -1
B.
3300 cm -1 及1640 cm -1
C.
3120 cm -1 及3300 cm -1
D.
1640 cm -1 及1450 cm -1
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【简答题】选词填空 in;into;up;through;out She needs time to grow _______ the new working environment. Even when facing difficulties, she never gave ______. Very few people dare go _______ on stormy nights. He is go...
【简答题】Complete the following sentences with proper prepositions or adverbs. 1. She needs time to grow _______ the new working environment. 2. Even when facing difficulties, she never gave ______. 3. He is ...
【简答题】Complete the following sentences with proper prepositions or adverbs. 1. She needs time to grow _______ the new working environment. 2. Even when facing difficulties, she never gave ______. 3. Very fe...
【多选题】关于以家庭为依托的早期干预模式的说法正确的是
A.
通过家庭巡回教师的指导协助特殊儿童家长或其监护人
B.
在家庭范围内对特殊儿童进行早期干预
C.
该模式体现了个别化教育的原理，具有针对性
D.
特殊儿童交际范围相对狭小、缺乏同伴交流，社会性发展受到一定影响
【简答题】Complete the following sentences with proper prepositions or adverbs. She needs time to grow _______ the new working environment. Even when facing difficulties, she never gave ______. Very few people ...
【简答题】Anyang ( 安阳 ) is known as China ’ s capital of ancient civilization because of the inscribed bones and ______________ ( 甲骨文 ), and the bonze wares ( 青铜器 ) unearthed in the Yin Ruins ( 殷墟 ) northwest o...
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