计算机中的数据总线所传送的信息是() A.地址信息 B.数据信息和指令代码 C.控制

题型:单项选择题

问题:

计算机中的数据总线所传送的信息是()

A.地址信息

B.数据信息和指令代码

C.控制信息

D.状态信息

考点:计算机基础计算机基础题库
题型:单项选择题

在○里填上“>”、“<”或“=”。

52 - 7○45              58 - 5○85 -5  

63 - 3○66              70 - 20○69 - 40 

48+4○44                42 +8○8+ 42  

66 - 7○59               54+4○56 - 6  

75+9○74                85 - 8○70+7

题型:单项选择题

转辙机直流电机实现反转通常使用()。

A、改变电枢电流方向

B、不同的励磁线圈

C、改变励磁电流方向

D、增加换向器

题型:单项选择题

()是指制动时闸瓦紧压车轮的力。

A、闸瓦压力

B、制动力

C、制动原力

D、闸缸压力

题型:单项选择题

Today, we’ll talk about what other effects watching TV might produce on children. Children should be (1) a lot of television, many experts and parents agree, but there is at least one circumstance when it might be beneficial: (2) . A recent study conducted by Italian researchers found that children (3) immediately preceding and during blood tests experienced less pain than children whose mothers (4) during the procedure, or children whose mothers were present but (5) .
The research, led by Carlo Brown, MD, at the University of Siena, is published in the Archives of Disease in Childhood. (6) the study. None received any type of anesthesia; the children and their mothers (7) . Both the group whose mothers attempted to distract them from the blood tests and those whose mothers simply observed reported (8) than the group who watched cartoons. For that group, the levels of pain were less and the children were better able to (9) .
One of the possible explanations is that children might have (10) during the procedures, exacerbating their perception of pain. "The higher pain level reported by children during (11) shows the difficulty mothers have in interacting positively (12) in their children’s life," the authors write.
However, they stressed that (13) still provided benefits, noting that the children would (14) during the procedures. "Indeed, children state that having their parent present (15) when in pain," say the authors.
Another possibility offered for consideration is the notion that the (16) might release pain-quelling endorphins. Endorphins, (17) produced by the pituitary gland, resemble opiates in their ability to produce analgesia and a sense of well-being. In other words, they might (18) .
In any case, the study results suggest that health workers should (19) to watch television during painful procedures (20) .

题型:单项选择题

脑卒中患者常见的功能障碍有()

A.运动障碍

B.共济失调

C.真性球麻痹

D.言语障碍

E.认知障碍

更多题库