标准麻花钻主切削刃外缘处的刀尖角较小,前角(),刀齿薄弱,速度高,磨损极为严重。A.

题型:单项选择题

问题:

标准麻花钻主切削刃外缘处的刀尖角较小,前角(),刀齿薄弱,速度高,磨损极为严重。

A.很大

B.为零

C.很小

D.与别处相同

考点:钳工初级钳工初级钳工知识模拟题
题型:单项选择题

阅读理解。

     Hi, I am Andy. I am in Class 3, Grade 7. Welcome to our classroom. Isn't it big and clean? We all have

lockers in the classroom. The red lockers are girls'. And boys' lockers are yellow. Do you like the colours?

I have a locker, too. This one is mine. I put many things in it. There are some comic books, a football, and a

pair of shoes in it. Jacky's locker is beside mine. There are socks and some stickers in it. That one is Tom's.

There are many CDs and books in it. His glasses are in the locker, too.

     What is in Mary's locker? There is a yellow bag in it. What's in the bag? We don't know. I guess (猜) there

are lots of snacks (零食) in it.

1. Andy's locker is _____.

A. red

B. yellow

C. white

D. black

2. There are some stickers in _____ locker.

A. Jacky's

B. Andy's

C. Tom's

D. Millie's

3. Tom has many books and _____ in his locker.

A. a bag

B. a pair of shoes

C. CDs

D. trousers

4. Andy is in _____.

A. Class 3

B. Class 1

C. Class 7

D. Class 8

5. What is in Mary's locker?

A. A ball.

B. Some comic books.

C. A yellow bag.

D. A pencil-box.

题型:单项选择题

下列各项,属人禽流感疑似病例的是()。

A.1周内有流行病学接触史,出现流感样症状

B.有流行病学史和临床表现,呼吸道分泌物标本中分离出特定病毒

C.出现高热、咳嗽等流感样症状

D.有临床表现,急性期和恢复期双份血清抗禽流感病毒抗体滴度4倍以上升高

E.有流行病学史和临床表现,呼吸道分泌物标本甲型流感病毒和H5型单克隆抗体抗原检测阳性

题型:单项选择题

计划免疫评价的常用指标是()

A.建卡率

B.接种率

C.抗体阳转率

D.保护率

E.以上都对

题型:单项选择题

申请“轻松假日计划”的借款人,需信用状况良好,无连续逾期60天以上的贷款记录。

题型:单项选择题

在滑动轴承中,轴瓦上浇铸的轴承合金的主要作用是()。

A、减少摩擦

B、增加轴承的支撑强度

C、防锈

D、便于拆卸

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