用化学用语表示: (1)镁离子________; (2)二氧化硫中硫元素的化合价

题型:填空题

问题:

用化学用语表示:

(1)镁离子________;

(2)二氧化硫中硫元素的化合价_______。

考点:离子符号的意义及写法化合价的求法
题型:填空题

阅读理解。

     Come and look at the photo of an American family. The woman in the middle is Beth White. She is a

teacher. The old woman on her right is her mother. She is Mrs.White. The man on her left is her father,

Mr.White. He's an artist (画家). The other young (年轻的) woman is Doris White. She is her younger

sister. Doris White has two children. They are students. Leo Bush is her son and May Bush is her

daughter. May sits (坐) next to her grandmother.

1. This is          family photo.

A. an American  

B. an English  

C. a Chinese  

D. a American

2. There are           people in the photo.

A. nine      

B. eight        

C. seven      

D. six

3. Beth's family name is          .

A. Smith  

B. White      

C. Bush  

D. Beth  White

4. Leo and May's father is         

A. Mr. White    

B. Mr. Smith        

C. Mr. Bush    

D. Mr. Read  

5. Mrs. White's May's           .  

A. mother's friend            

B. grandmother

C. mother's sister

D. father's mother

题型:填空题

Marti等对于单克隆B淋巴细胞增多症(MBL)的诊断标准包括()

A.外周血存在单克隆B细胞亚群

B.存在特异的免疫表型

C.单克隆B细胞亚群持续存在3个月以上

D.B淋巴细胞绝对值<5×109/L

E.无淋巴增殖性疾病或自身免疫性疾病的其他特点

题型:填空题

预制零星构件项目适用于预制钢筋混凝土()。

A.阳台隔板

B.天沟板

C.遮阳板

D.窗台板

题型:填空题

在双绞线组网的方式中,______是以太网的中心连接设备。

A.集线器

B.收发器

C.中继器

D.网卡

题型:填空题

在色彩的客观三属性和主观三属性对比时,下列属性是相对应的()

A.色相与彩度

B.主波长与色相

C.纯度与饱和度

D.亮度与饱和度

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