以下关于曲线段中桩桩距的描述，正确的是（）。A.圆曲线应为25m，缓和曲线应为10m

阅读短文，选择正确答案。

    Today is Saturday, Tom's wife is cleaning the house. 

    "Look at all these umbrellas." Tom's wife says to him. "There are eight and they are all broken (坏的)."

    "I want to take them all to the umbrella shop. Let the shop keeper — Mr Smith mend them." Tom says.

    Tom takes them to the shop. Mr Smith asks him to get them home on Sunday. Tom goes home from the

shop by bus. He sits beside an old woman. She has an umbrella on the floor near her.

    On the bus, Tom takes the old woman's umbrella by mistake. 

    "Hey!" The woman says. "That's mine." 

    "I'm so sorry." Tom says and gives the umbrella to the old woman.

    On Sunday, he gets the umbrellas from the umbrella shop and gets on the bus. He sits down, a woman says

to him, "You take so many umbrellas. You certainly have a successful (成功的) day!" She is the old woman

Tom met on Saturday.

1. Tom's wife finds the broken umbrellas _________. [ ]

A. in a shop

B. in their house

C. on the bus

D. in the street

2. Tom takes the umbrellas to a shop _________. [ ]

A. to sell

B. to mend

C. to throw away

D. to give them to others

3. On the bus, Tom _________. [ ]

A. takes a woman's umbrella.

B. finds his umbrella.

C. buys an umbrella

D. gives his umbrella to an old woman.

4. Who can mend the umbrella? [ ]

A. Tom.

B. Tom's wife.

C. The old woman.

D. Mr Smith.

5. What does the old woman think of Tom? [ ]

A. a shop keeper.

B. an umbrella seller.

C. a thief.

D. a mender.

影响青藏地区粮食作物生长分布的主要因素是[ ]

A、降水量

B、土壤肥力

C、热量

D、光照

【说明】
某学校建立了一个网上作业提交与管理系统，基本功能描述如下：
(1)账号和密码。任课老师用账号和密码登录系统后，提交所有选课学生的名单。系统自动为每个选课学生创建登录系统的账号和密码。
(2)作业提交。学生使用账号和密码登录系统后，可以向系统申请所选课程的作业。系统首先检查学生的当前状态，如果该学生还没有做过作业，则从数据库服务器申请一份作业。若申请成功，则显示需要完成的作业。学生需在线完成作业，单击“提交”按钮上交作业。
(3)在线批阅。系统自动在线批改作业，显示作业成绩，并将该成绩记录在作业成绩统计文件中。

读识电气设备施工图应首先阅读电气设计说明书和图例符号表，了解设计意图及图例符号的意义，然后识读电气总平面图、室内电气照明平面图和系统图。在识读室内电气平面图和系统图时，应遵循______顺序进行

A．照明电气设备、支线、分配电板、干线、配电盘、入户线
B．入户线、干线、配电盘、支线、分配电板、照明电气设备
C．入户线、配电盘、干线、分配电板、支线、照明电气设备
D．入户线、配电盘、干线、支线、分配电板、照明电气设备
E．以上均不正确

出纳人员不得兼任稽核和收入、费用、债权债务账目的登记工作，但可以兼管会计档案保管工作。( )