导致变压器分接开关接触不良的原因有哪些?

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问题:

导致变压器分接开关接触不良的原因有哪些?

考点:电气运行类技术电气运行类技术题库
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甲建筑工程公司向乙银行贷款200万元人民币,以其所持有的某上市公司股票200万股设定质押,签订书面合同。此合同( )。

A.于书面合同签订时生效
B.依法办理出质登记后生效
C.依法向有关部门备案后生效
D.于质物移交于质权人占有时生效

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培训教学设计的原则有()。

A、系统综合原则

B、客观真实原则

C、易于操作原则

D、实事求是原则

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China is to send its top negotiator on North Korea’s nuclear program to Pyongyang (36) amid international concern over the launch of (37) .
While the (38) and its ally Japan push for (39) against North Korea, China is (40) , not sanctions.
Also, the (41) to Japan says sanctions on North Korea will (42) efforts to bring the secluded state back to (43) on its nuclear program.
North Korea (44) the six-party talks in (45) after Washington imposed financial sanctions for alleged counterfeiting and (46) activities.
A broadcast on North Korean State Television (47) the missile tests, in what it called a "successful (48) ".
It said North Korea will take action against anyone who (49) them.
The Minister is reported to have told a (50) that the missile launches were (51) because of America’s sanctions against Pyongyang.
North Korea remains (52) in the face of international condemnation and has warned (53) could be carried out.
UN Security Council members will (54) discussions tonight on whether a (55) condemning the missile launches should call for sanctions.

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伊拉克 * * 阿巴迪7月9日抵达该国第二大城市(),并宣布这座被极端组织“伊斯兰国”控制3年之久的战略重镇“完全解放”。

A.阿勒颇

B.拉卡

C.摩苏尔

D.的黎波里

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香港特别行政区是1997年哪一天回归祖国的()

A、5月1日

B、10月1日

C、7月1日

D、12月20日

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