下列关于蹼颈的表述不正确的是（）。A、表现为皮肤和皮下组织蹼状增宽 B、多为Turn

阅读短文，选择最佳答案。

      It was October 1st. It was Tom's birthday. He saw a card on the table when he came back home. It

said, " There's a present for you, Tom. Look for it in your room." Tom ran into his room. His parents were

watching him and smiling. On his bed, he saw a new red box. There was a card in the box. He took it out

and read, " Dear Tom, I'm your present. My first letter is in the word pear, but not in bear. My second letter

is in tell, but not in tall, and you can find my last letter in both orange and ink. What am I? " Tom thought hard

and soon smiled, " Aha, I know, Mom. But where is it? " His mother told him it was in his schoolbag and he

found his present in it. What is it? Do you know?

1. Tom's birthday was on ____________.

A. October 2nd

B. October 1st

C. October 3rd

2. Tom saw a box ____________.

A. on his bed

B. on the table

C. on the chair

3. What did he find in the box?  ____________

A. He found a new pen.

B. He found nothing.

C. He found a card.

4. The card in the box told him ____________.

A. what color his present was

B. how much his present was

C. what his present was

5. Tom's present was ____________.

A. a letter

B. a pen

C. a bag

下列有关漏磁通的叙述正确的是（）。

A.内部缺陷处的漏磁通，比同样大小的表面缺陷为大

B.缺陷的漏磁通通常同试件上的磁通密度成反比

C.表面缺陷的漏磁通密度，随着离开表面距离的增加而急剧减弱

D.用有限线圈磁化长的试件，不需进行分段磁化

打开工作簿文件EXCEL.XLS，将工作表Sheet1的A1:D1单元格合并为一个单元格，内容水平居中：计算“合计”列及“总计”行的内容，将工作表命名为“图书发行情况表”。
2．打开工作簿文件EXE.XLS，对工作表“选修课程成绩单”内的数据清单的内容进行自动筛选后的工作表还保存在EXC.XLS工作簿文件中，工作表名不变。

下列哪些疾病应与脑脓肿相鉴别()

A．星形细胞

B．脑转移癌

C．放射性脑坏死

D．脑手术后残腔

E．脑内血肿吸收期

乳状液不稳定的原因和方式？