锻件的内圆角半径对应模具型槽的外圆角半径,如果选的过小可导致锻模在热处理和模锻过程中

题型:判断题

问题:

锻件的内圆角半径对应模具型槽的外圆角半径,如果选的过小可导致锻模在热处理和模锻过程中因应力集中使其开裂。()

考点:锻造工艺学锻造工艺学题库
题型:判断题

新生儿8期正常,生后1~3个月出现呕吐、喂养困难

A.血浆苯丙氨酸浓度
B.苯丙氨酸耐量试验
C.四氢生物碟呤负荷
D.尿三氯化铁试验
E.Guthrie细菌抑制试验对下列各例可疑苯丙酮尿症患儿确诊应选择的检查是

题型:判断题

第三节:语法填空(共10小题;每小题1.5分,满分15分)

阅读下面短文, 按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空, 并将答案填写在答题纸标号为56-65的相应位置上。

Do you know parents of high school students who come to the rescue whenever their son or daughter is ____56____ a tough situation? Have they tried to negotiate with the school for a different teacher or a better grade?

If so, they may be helicopter parents, ____57____are always prepared to rush to schools to rescue their children from any adversity(逆境). College admissions office began using this nickname a few years ago ___58____they noticed that parents were becoming___59___(increase)involved in the daily lives of their college-age children.

Actually, helicopter parents cause many problems__60__different stages of development. For example, __61___ can hinder(妨碍;阻碍) a child’s ability to develop his or her own motivation, self-confidence or sense of responsibility. ___62___should Johnny make the effort to remember his violin if he knows that Dad will bring it to school? Moreover, students who haven’t had the opportunity to smooth away their own obstacles(障碍)----whether social or academic----emerge(出现) from adolescence poorly___63__(equip)to handle the demands of college and adulthood.

___64__, I think it is wise to be mindful of the importance of teaching self-reliance and responsibility, and that requires letting children experience the life lessons and ___65___(consequent)of their actions.

题型:判断题

下表是孝文帝改革的一项措施,该项措施的主要意义在于

鲜卑姓拓跋拔拔丘穆陵
汉姓长孙
 

A.加速了鲜卑族的汉化进程    B.变鲜卑贵族为汉族地主

C.改鲜卑人为汉人            D.消灭了鲜卑陋习

题型:判断题

若x是有理数,则x2+1一定是 [ ]

A.等于1

B.大于1

C.不小于1

D.非负数

题型:判断题

在飞机制造中,为保证协调准确度采用哪三种协调原则。

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