怎么判定误差造成的原因?

题型:问答题 简答题

问题:

怎么判定误差造成的原因?

考点:数控线切割操作工数控线切割操作工题库
题型:问答题 简答题

小剂量阿司匹林预防血栓形成的机制是

A.抑制单胺氧化酶
B.抑制TXA2生成
C.抑制胆碱酯酶
D.激动多巴胺受体
E.阻断多巴胺受体

题型:问答题 简答题

An Indian anthropologist, Chandra Thapar, made a study of foreign cultures, which had customs similar to (91) of his native land. One culture in (92) fascinated him because it reveres one animal (93) sacred, much as the people in India (94) the cow. The things he discovered might interest you (95) you will be studying India as part of this course.
The tribe Dr. Thapar (96) is called the Asu and is found on the American continent north of the Tamhumara of Mexico. Though it seems to be a (97) developed society of its type, it has an overwhelming (98) with the care and feeding of the rac—an animal much like a bull in size, strength and temperament. In the Asu tribe, it is almost a social (99) to own at least one (100) not more rats. People not possessing at least one are (101) in low esteem by the community because they are too poor to (102) one of these beasts properly. Some members of the tribe, to (103) their wealth and social prestige, even own (104) of racs.
(105) the rac breed is not very healthy and usually does not live more than five to seven years. Each family invests large (106) of money each year to keep its rac healthy and shod, for it has a tendency to throw its shoes often. There are rac (107) in each community, perhaps more than one if the community is particularly (108) . These specialists, however, due to the long period of ritual training they must undergo and (109) the difficulty of obtaining the right selection of charms to treat the rac, demand (110) offerings whenever a family must treat an ailing rac.

A.for

B.as

C.is

D.of

题型:问答题 简答题

下列说法不正确的是(  )

A.油漆覆盖在钢铁制品的表面,能缓慢钢铁的生锈

B.陶瓷餐具是由有机合成材料制成

C.点燃办法鉴别涤纶和纯羊毛

D.肥皂水能区别硬水和软水

题型:问答题 简答题

焊接热循环的三个主要参数是()、()和()。

题型:问答题 简答题

左向右分流型先天性心脏病合并心力衰竭的主要原因是()

A.心肌收缩功能障碍

B.心室容量负荷过重

C.心室充盈障碍

D.心室压力负荷过重

E.缺氧

更多题库