供应室在使用预真空压力蒸汽灭菌时，物品包装体积不应超过A．小于30×30×30cm

根据对话内容，在每个标有题号的空白处填入一个适当的句子，使对话完整，合乎情景。

Sam=S John=J

S: Hi, John, 1.                              ?

J: Nothing much. Why?

S: You like Jackson's singing, don't you?

J: Yes, that's very true.

S: There is gong to be a concert given by him in the theater at six this evening. Two tickets. 

    2.                              ?

J: I'd love to. 3.                                ?

S: How about five at my home?

J: Your home? I have to drive 20 minutes and come back in 25 minutes. That's a return (往返) way.

S: I know, but you have to, my dear friend!

(Twenty minutes later.)

J: Here we are. 4.                                 ?

S: Let's go over there.

J: Look at the sign. 5.                                  !

S: Look more carefully please. No parking from 9:00 a.m. to 4:00 p.m.

工作流程图用( )表示工作。

A．矩形框

B．箭线

C．直线

D．虚线

规矩部件包括（）。

A.前规

B.递纸机构

C.侧规

D.预挡规

E.翻转滚筒

报纸广告媒介的劣势？

选出属于锻造加热缺陷的缺陷类型（）。

A、冷隔

B、过热

C、冷裂

D、咬边