滚齿机滚刀主轴与前轴承的配合间隙为0.02～0.03mm。

用所给词的适当形式填空。

1. The house     __    (surround) by police last night.

2. Was the snake   __    (live) or dead?

3. He never        __(depend) on anyone in those days.

4. They had great difficulty in __       (breathe) ,for the air was thin.

5.A little girl in white        __(draw) my attention that day.

6. You have had a life of joy,and  ___      (please) and success.

7. The two girls look the same,l think they're  __       ( twin)．

下列哪项不支持肝硬化引起的消化道出血

A．脾脏不大

B．前胸部皮肤可见蜘蛛痣

C．肝脏质地较硬

D．有腹水

E．有腹壁静脉曲张

同步发电机由定子和转子两部分组成。转子是发出电力的电枢，定子是磁极。

简述开展职业生涯年度评审的内容和要求。

在常用的典型夹紧机构中，扩力比最大的是（）。

A.斜楔夹紧机构

B.螺旋夹紧机构

C.偏心夹紧机构

D.弹簧夹头