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【单选题】
There are some special traditions in Hawaii. People are very friendly and always welcome visitors. They give visitors a lei – a long necklace of beautiful fresh flowers. Men wear bright flowered shirts, and women often wear long flowered dresses. There are traditional Chinese, Japanese and Filipino holidays and all the holidays from the U. S. They call Hawaii the Aloha State. Aloha means both hello and good-bye. It also means I love you. Usually when people from different countries, races, and traditions live together, there are serious problems. There are a few problems in Hawaii, but in general, people have learned to live in peace. Hawaiians earn most of their money from travelers coming from the mainland and from Japan . There are so many people living in Hawaii now that there are residential areas where there used to be farms. Some of the big sugar and pineapple companies have moved to the Philippines , where they do not have to pay workers as much money. The families of the first people who came from the U. S. mainland own the important banks and companies. Japanese are also buying or starting business here. Some companies have moved to Philippines because .
A.
there are too many visitors in Hawaii
B.
people with different traditions don’t treat each other kindly
C.
workers there ask for less wages than Hawaiians
D.
the American own most of the important things
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【单选题】( )即可处理的电力电缆(设备)缺陷,由运行维护(检查)人员与管理或检修部门的有关技术人员具体研究处理方案,以便随时安排检修处理。
A.
计划停电
B.
非计划停电
C.
无须停电
【判断题】停电检修时必须把各方面电源完全断开,与停电设备有关的变压器和电压互感器还必须从低压侧断开。
A.
正确
B.
错误
【多选题】电气设备停电检修时应切断的电源包括( )
A.
检修设备各侧的电源断路器和隔离开关
B.
与停电检修设备有关的变压器和电压互感器
C.
断开断路器和隔离开关的操作能源
D.
停电设备的中性点接地开关
【简答题】某工程钻孔 3号土样3-1粉质黏土和3-2淤泥质黏土的压缩试验数据列于下表,试计算压缩系数a 并对其压缩性进行评价: 垂直压力( KPa ) 0 50 100 200 300 400 孔隙比 土样 3-1 0.866 0.799 0.770 0.736 0.721 0.714 土样 3-1 1.085 0.960 0.890 0.803 0.748 0.707
【多选题】糖皮质激素的生理作用包括
A.
促进蛋白质分解
B.
使淋巴细胞减少
C.
升高血糖
D.
使胃酸和胃蛋白酶增加
E.
刺激二型肺泡细胞产生二软脂酰软磷脂
【简答题】动物园里有大象9头,金丝猴4只。金丝猴的数量是大象的几分之几?
【简答题】设inta,b=5;,则执行表达式a=b-2==3后a的值是______。
【简答题】Acabó _________(darse) cuenta de su error.
【单选题】检修部分若分为几个在电气上不相连接的部分[如分段母线以隔离开关(刀闸)或断路器(开关)隔开分成几段];则各段应分别验电接地短路。降压变电所全部停电时,应将各个可能来电侧的部分接地短路,其余部分不必每段都装设接地线或合上接地刀闸。接地线、接地刀闸与检修设备之间不得连有()。
A.
隔离开关
B.
断路器(开关)或熔断器
C.
断路器(开关)和隔离开关
D.
断路器(开关)或隔离开关
【单选题】如图,已知△ACD ∽ △ABC,∠1=∠B,下列各式正确的是(  )
A.
AD AB = AC AB = CD BC
B.
AD AC = AC AB = CD BC
C.
AD CD = AB AC = CD BC
D.
AD AB = AB AC = CD BC
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