正常供电时,严禁将剩余电流()退出运行、私自撤除。A.总保护、末端保护装置; B.中

题型:单项选择题

问题:

正常供电时,严禁将剩余电流()退出运行、私自撤除。

A.总保护、末端保护装置;

B.中级保护、末端保护装置;

C.总保护、中级装置;

D.总保护、中级保护、末端保护装置;

考点:用电营销考试用电营销考试题库
题型:单项选择题

把a3-a分解因式的正确结果是(  )

A.(a+1)(a-1)

B.a(a+1)(a-1)

C.a(a2-1)

D.a(a-1)2

题型:单项选择题

.实验室中配制250mL 0.20mo1·L-1NaOH溶液时,必须使用到的玻璃仪器是

题型:单项选择题

DOM is a platform- and language- (66) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification).The document can be further processed and the results of that processing can be incorporated back into the presented (67) . DOM is a (68) -based API to documents, which requires the whole document to be represented in (69) while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large (70) documents that do not fit into the memory available for processing.

A.XML

B.HTML

C.script

D.Web

题型:单项选择题

与分期法和一期法行耳廓再造法相比,皮肤扩张法最突出的优点在于()。

A、再造耳有一定立体感

B、省时、经济

C、瘢痕少

C、能解决再造耳廓时耳后乳突区皮肤量不足的问题

E、并发症少

题型:单项选择题

患儿,男,12岁,1个月前无明显诱因出现全程血尿,尿色呈茶水样,但尿色不均匀,有时有小黑血块,病初曾有尿频、尿急症状。尿蛋白(+),RBC0~5/HP.WBC2~8/HP,近1周眼睑水肿。查体:血压120/80mmHg,双眼睑轻度水肿,双肾区无叩痛。

经造影检查证实膀胱外形不规则,其内有一线团样物,进一步检查应首选()

A.手术探查

B.静脉肾盂造影(IVP)

C.膀胱镜检查

D.逆行造影(注气作为对照)

E.VCUG

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