浇注系统的浇口位置应避免()A、直冲型腔 B、直冲型芯和嵌件 C、与主流道在同一位置上D

题型:单项选择题

问题:

浇注系统的浇口位置应避免()

A、直冲型腔

B、直冲型芯和嵌件

C、与主流道在同一位置上

D、设置在动模上

考点:模具制造工中级模具制造工中级模具制造工题库
题型:单项选择题

一些方便食品中常加入调味品和食品添加剂,下列各种物质在做上述用途使用时,需严格控制用量的是(  )

A.味精

B.亚硝酸钠

C.香辛料

D.维生素B、C

题型:单项选择题

Dear Mr and Mrs Smith,

 I want to thank you again for having me in your home for the

summer holidays.I had always wanted to return the village after                            1.       

moving away and it is really great to see most of my old friends again.           2.       

I told mother,father,sister,and all my friends here that a great                         3.       

time I had.I’ll never forget the steamboat ride.I never knew about                  4.       

a ride down a river could be so excited.I also enjoyed the                              5.       

evening when we spent together.And I can’t forget the good food                   6.       

you cooked for me.It was wonderful.I hope that you two can come                 7.       

and visit us sometime soon.Father and mother will love to see you.                 8.       

Maybe you could come during a winter holidays.Uncle Ben will also              9.       

go back for Christmas.I’m sure we’ll have a wonderful time together.             10.       

With best wishes.

Yours truly,

Tom

题型:单项选择题

解释程序的功能是______。

A.将高级语言换为目标程序

B.将汇编语言转换为目标程序

C.解释执行高级语言程序

D.解释执行语言程序

题型:单项选择题

在什么情况下使用机动泵进行飞机抽油()。

A.飞机发生地面事故,需大量抽油而又不能使用飞机油泵

B.没有机务人员

C.航空公司人员不会飞机操作

D.飞机故障

题型:单项选择题

某工程因抢工期,模板提前拆除。该楼四层模板在拆除时,没有审批和拆除安全措施,在接近拆完时,突然一大片混凝土楼板掉了下来,将4个拆模工人压在下边,经抢救无效全部死亡。请判断事故原因。

应进行拆除前安全技术交底却未进行。

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