现场量房要标明上下水管、()和厨房设施的准确位置。
参考答案:卫生间
句型转换。
1.My family went to the beach last week.(对划线部分提问)
_____ _____ _____ family _____ last week?
2. Sally often does some reading in the morning. (改为否定句)
Sally _____ often _____ reading in the morning.
3. Ann went to the mountain by car .(对划线部分提问)
_____ _____ Ann _____ to the mountain?
4. My vacation was great! (对划线部分提问)
_____ _____ your vacation?
5. I went to summer camp during my holiday. (改为一般疑问句并作否定回答)
—_____ you _____ to summer camp during your holiday?
—_____, I _____.
(12分)目前,全世界镍的消费量仅次于铜、铝、铅、锌,居有色金属第五位。镍行业发展蕴藏着巨大潜力。
(1)配合物Ni(CO)4常温为液态,易溶于CC14、苯等有机溶剂。固态Ni(CO)4
属于____晶体,基态Ni原子的电子排布式为 ;
A.氢键
B.离子键
C.共价键
D.配位键(3)很多不饱和有机物在Ni催化下可以与H2发生加成反应。如①CH2=CH2、②CH≡CH、③等,其中碳原子采取sp2杂化的分子有 (填物质序号),预测HCHO
分子的立体结构为 形;
(4)氢气是新型清洁能源,镧(La)和镍(Ni)的合金可做储氢材料。 该合金的晶胞如右图所示,晶胞中心有一个镍原子,其他镍原子都在晶
胞面上,镧原子都在晶胞顶点。则该晶体的化学式为 。