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【单选题】
组成房屋各部分的构件归纳起来有 ( ) 两方面作用
A.
围护、通风采光
B.
通风采光、承重
C.
围护、承重
D.
通风采光、通行
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【简答题】Look at this mail-order advertisement: SUNSHINE COMPANY Products for a Safe Environment A2477—l You're going to love this natural soap(肥皂). There are no chemicals in it. It is very good for your h...
【简答题】Mail-order Advertisement Moonlight Company Products for a Sale Environment A2477-HAND SOAP You are going to love this natural soap. There are no chemicals in it .It is very good for your hands and f...
【简答题】Look at this mail-order advertisement: SUNSHINE COMPANY Products for a Safe Environment A2477—l You're going to love this natural soap.There are no chemicals in it.It is very good for your hands...
【简答题】(15分) X、Y、T、Q 四种元素,位于元素周期表前四周期,元素的性质或结构信息见下表。 元素 性质或结构信息 X 单质为双原子分子,分子中含有3对共用电子对,常温下单质气体性质稳定,但其原子较活泼。 Y 二价阳离子的外围电子层排布为3d 9 T 原子核外s轨道电子总数等于p轨道电子总数;人体内含量最多的元素,且其单质是常见的助燃剂。 Q 第三周期主族元素中原子半径最小。 请根据上述信息回答下列...
【多选题】开水面团的性质是( )。
A.
柔软无筋
B.
弹性好
C.
可塑性好
D.
黏性小
【简答题】SUNSHINE COMPANY Products for a Safe Environment A4277—HAND SOAP You are going to love this natural soap. There are no chemicals in it. It is very good for your hands and face. D4545—GARDEN SPRAY ...
【简答题】(选修三)【物质结构与性质】 (1)氯化铬酰(CrO 2 Cl 2 )在有机合成中可作氧化剂或氯化剂,能与许多有机物反应。写出铬元素的基态原子核外电子排布式:_________________;与铬同周期的所有元素的基态原子中最外层电子数与铬原子相同的元素有_______(填名称);CrO 2 Cl 2 常温下为深红色液体,能与CCl 4 、CS 2 等互溶,据此可判断CrO 2 Cl 2 是__...
【单选题】第三节 短文理解2 阅读下列短文,从[A]、[B]、[C]三个选项中选择一个正确答案。 Henry was in London for a holiday. He stayed in an old woman's house. One day he was not feeling well, so he went to the old woman and said, 'I must go to s...
A.
spend his holiday
B.
see a doctor
C.
visit the old woman
【简答题】完形填空。 Dear Dr. Bamford, I know you are a famous scientist who has done great work on cloning (克隆) animals. Please excuse me for writing to you, but I need your 1 . Let me explain. I am a 58-year-old m...
【简答题】有A、B、C、D、W五种元素.W的原子序数为29,其余的均为短周期主族元素;其中A、B、C属于同一周期,A原子最外层p能级的电子数等于次外层的电子总数;B原子最外层中有两个未成对的电子;C元素氢化物与其最高价氧化物对应水化物之间反应生成一种盐;D原子核内的质子数与中子数相等,能与B形成DB 2 、DB 3 常见化合物.根据以上条件,回答下列问题: (1)推断元素名称:A______. (2)C元素...
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