可进一步证实某导联电位为心电伪迹的方法是()。 A.常规增加一导联记录心电 B.调整

题型:单项选择题 A1/A2型题

问题:

可进一步证实某导联电位为心电伪迹的方法是()。

A.常规增加一导联记录心电

B.调整耳电极

C.在出现伪迹电极附近增加一电极

D.降低出现伪迹电极阻抗

E.调整地线电极

考点:神经电生理脑电图技术(主管技师)神经电生理脑电图技术(主管技师)综合练习神经电生理脑电图技术(主管技师)综合练习题库
题型:单项选择题 A1/A2型题

We could hear the frightened people’s _____ in the accident.

A.noise

B.sound

C.shout

D.voices

题型:单项选择题 A1/A2型题
在一批外表相同的零件里混入了一个次品(次品轻一些),找这个次品如果能用天平称的话,最好的方法是先把这批零件平均分成(  )份,然后再称.
A.2B.3C.4
题型:单项选择题 A1/A2型题

多轴转向架通过小半径曲线时,会有困难,主要是因为()。

A、轴距长

B、轮轴多

C、轮对多

D、轴箱紧凑 

题型:单项选择题 A1/A2型题

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 A1/A2型题

早期食管癌的症状是()

A.食欲不振

B.恶心、呕吐

C.食物停滞感或异物感

D.进行性吞咽困难

E.持续性胸痛或背痛

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