裂纹宽度在()毫米间的应设拉线补强。A.0.1~1.0 B.0.2~1.0 C.0.

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问题:

裂纹宽度在()毫米间的应设拉线补强。

A.0.1~1.0

B.0.2~1.0

C.0.1~1.1

D.0.1~0.9

考点:铁路通信工技能考试铁路通信工(线务维护)初级铁路通信工(线务维护)初级题库
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I will never forget the year I was about twelve years old. My mother told us that we would not be (16) Christmas gifts because there was not enough money. I felt sad and thought, "What would I say when the other kids asked what I’ d (17) " Just when I started to (18) that there would not be a Christmas that year, three women (19) at our house with gifts for all of us. For me they brought a doll. I felt such a sense of (20) that I would no longer have to be embarrassed when I returned to school. I wasn’t (21) . Somebody had thought (22) of me to bring me a gift.

Years later, when I stood in the kitchen of my new house, thinking how I wanted to make my (23) Christmas there special and memorable, I (24) remembered the women’s visit. I decided that I wanted to create that same feeling of (25) for as many children as I could possibly reach.

So I (26) a plan and gathered forty people from my company to help. We gathered about 125 orphans (孤儿) at the Christmas party. For every child, we wrapped colorful packages filled with

toys, clothes, and school supplies, (27) with a child’ s name. We wanted all of them to know they were (28) Before I called out their names and handed them their gifts, I (29) them that they couldn’t open their presents (30) every child had come forward. Finally the (31) they had been waiting for came as I called out, "One, two, three. Open your presents!" As the children opened their packages, their faces beamed and their bright smiles (32) up the room. The (33) in the room was obvious, and (34) wasn’ t just about toys. It was a feeling, and the feeling I knew (35) that Christmas so long ago when the women came to visit. I wasn’t forgotten. Somebody thought of me. I matter.

35().

A. by

B. till

C. for

D. from

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化合物X是产量大、应用广的二元化合物,大量用作漂白剂、饮水处理剂、消毒剂等。年产量达300万吨的氯酸钠是生产X的原料,92%用于生产X—在酸性水溶液中用盐酸、二氧化硫或草酸还原。此外,将亚氯酸钠固体装柱,通入用空气稀释的氯气氧化,也可生产X。X有极性和顺磁性,不形成二聚体,在碱性溶液里可发生歧化反应。

⑴写出X的分子式和共轭π键()。

⑵分别写出上述用草酸还原和用氯气氧化生产X的反应方程式。

⑶写出上述X歧化反应的化学方程式。

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下列关于光知识的说法中,正确的是(  )

A.在平面镜中看到的是物体的实像

B.日食是因为光的反射引起的

C.由于光的折射,我们看到水中的鱼变浅了

D.近视镜片是凸透镜

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下列叙述中,错误的是( )。

A.内存储器RAM中主要存储当前正在运行的程序和数据
B.高速缓冲存储器(Cache)一般采用DRAM构成
C.外部存储器(如硬盘)用来存储必须永久保存的程序和数据
D.存储在RAM中的信息会因断电而全部丢失

题型:单项选择题

甲的房屋与乙的房屋相邻。乙把房屋出租给丙居住,并为该房屋在A公司买了火灾保险。某日甲见乙的房屋起火,唯恐大火蔓延自家受损,遂率家人救火,火势得到及时控制,但甲被烧伤住院治疗。下列哪一表述是正确的()

A.甲主观上为避免自家房屋受损,不构成无因管理,应自行承担医疗费用

B.甲依据无因管理只能向乙主张医疗费赔偿,因乙是房屋所有人

C.甲依据无因管理只能向丙主张医疗费赔偿,因丙是房屋实际使用人

D.甲依据无因管理不能向A公司主张医疗费赔偿,因甲欠缺为A公司的利益实施管理的主观意思

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