简述工艺阀门开关方法，并说明全开全关位置

看图填空。

     Jack was woken up    l    the shouting " Fire ! Help! Fire! Help!. . . " What had    2   ?  He   3   out of the window. Wow!

He found that his neighbor's   4   was on fire. Jack jumped off the bed and rushed to the telephone. He made a    5   to the

police.    6   , he ran out and    7     his neighbor (to) fight   8     the fire. Soon the fire-fighters came and in a short time the fire

was put    9  . And the house owner    10   Jack and fire-fighters a lot.

1.           2.           3.          4.           5.           

6.           7.           8.          9.           10.      

应与产后血晕相鉴别的疾病不包括

A．妊娠腹痛

B．郁冒

C．痫证

D．产后中暑

E．产后痉证

犹太教带有明显的犹太希伯来民族主义色彩。基督教在外邦传播过程中不再坚持狭隘的希伯来民族主义，逐渐演变成具有反犹太色彩的普世性宗教。

力绕刚体O点转动的效果决定于两个因素，即（）与（）的乘积。

简述系统开发的任务。