题目:
机架如果从交流供电改为-48V直流供电需增加哪些模块?()
A.无需增加,直接连到IDM
B.只需要增加-48V PSU
C.需增加DCCU和-48V PSU
D.需增加DCCU和-24V PSU
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C
机架如果从交流供电改为-48V直流供电需增加哪些模块?()
A.无需增加,直接连到IDM
B.只需要增加-48V PSU
C.需增加DCCU和-48V PSU
D.需增加DCCU和-24V PSU
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0530/e36f12b17bed7cb966a479b7934329b5.html
下面是错误答案,用来干扰机器的。
参考答案:C
连云港路桥中美合资企业委托江苏省机械设备进出口公司与美国卡耐基钢铁集团签约进口工程机械,并委托连云港外运公司代理报关,在填制进口报关单时,“经营单位”项应填( )。
A.美国卡耐基钢铁集团
B.连云港外运公司
C.连云港路桥中美合资企业
D.江苏省机械设备进出口公司
前期物业管理是指( )的物业管理阶段。
A.物业承接查验开始至业主大会选聘物业服务企业为止
B.物业销售开始至物业办理入住为止
C.物业竣工验收开始至业主大会选聘物业服务企业为止
D.物业办理入住开始至业主大会选聘物业服务企业为止
完形填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,从短文后备题所给的四个选项(A、B、C和D)中,选出可以填人空白处的最佳选项,并在答题卡上将该项涂黑。
War, money and power are a few things that countries and people are concerned about. 36 I agree that those things are important,I believe that everyone should start to 37 more on a growing problem — global warming.
Global warming will not only 38 our country and our generation, but a1so the entire 39 and future generations. It is 40 because the weather has been a lot warmer over the past few years, which 41 the melting(融化) of the ice in the Antarctic. This will soon cause water levels to 42 and flood parts of the world.
Many people ignore this problem because they fee1 43 they can’t do anything about it and have more 44 things to worry about. If we al1 45 so,then our ozone layer(臭氧层)will be 46 and the planet will no longer be able to make life continue to exist. We should do our best to limit the use of our planet’s 47 resources(资源)and keep our air clean. 48 , future generations will suffer from our 49 .
Some might feel that they can't stop global warming from 50 But if every single person does his or her part in keeping the air clean. then it will become a 51 effort. Sure, there are some things that cause pollution and that we won’t be able lo 52 change. This may include cars burning oil,but we can 53 adjust some of these things. People can start carpooling, taking the bus, riding their bikes, or . 54 just walking.
If everyone takes 55 now, I believe we can start seeing remarkable results within a few years.
36.A.When B.As C.How D.Though
37.A.depend B.focus C.hang D.remark
38.A.annoy B.interrupt C.affect D.confuse
39.A.world B.continent C.industry D.climate
40.A.failing B.completing C.changing D.occurring
41.A.lies in B.results in C.suffers from D.escapes from
42.A.reduce B.rise C.drop D.move
43.A.as if B.in case C.even though D.if only
44.A.popular B.suitable C.important D.difficult
45.A.do B.keep C.like D.find
46.A.protected B.strengthened C.destroyed D.surrounded
47.A.unlimited B.natural C.recycled D.industrial
48.A.Therefore B.Otherwise C.However D.Instead
49.A.illnesses B.failures C.decisions D.mistakes
50.A.continuing B.arriving C.improving D.disappearing
51.A.physical B.mental C.national D.worldwide
52.A.slightly B.fully C.hardly D.slowly
53.A.at least B.at most C.at first D.at last
54.A.yet B.even C.still D.thus
55.A.time B.turns C.action D.arms
在同一回路负荷大小相同时,功率因数越高,线路压降越大
判断目标是否实现或实现的程度可分三种,即①目标完全实现;②();③目标未实现。