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【单选题】
在中性点不接地的三相电源系统中，为防止触电，将与电气设备带电部分相绝 缘的金属外壳或金属构架与大地可靠连接称为( )。A.
工作接地
B.
工作接零
C.
保护接地
D.
保护接零
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反馈参考答案：
举一反三
【单选题】主体选择是指作为历史主体的人,从自身的需要和知识结构经验技能出发,根据历史的客观条件和发展趋势确定自己行为的方式和方向的行动。这种观点说明
A.
承认主体选择作用必然否定历史决定论
B.
承认主体选择作用与承认历史决定论不矛盾
C.
任何一种社会制度的产生都根源于主体的选择
D.
历史决定论是根本错误的
【简答题】PTK is used to __________. [A]locate one’s birth place [B]promote genetic research [C] identify parent-child kinship [D] choose children for adoption
【单选题】According to the passage, why were doctors in the West sometimes unable to help their patients? ( )
A.
They did not know how to treat the unfamiliar illnesses.
B.
They were more interested in establishing practices in the cities.
C.
They were more concerned with doing research than with treating patients.
D.
They were often overcome by diseases caught from their patients.
【单选题】There are already some specialized organizations established and operated to help the patients of OCD.
A.
正确
B.
错误
【简答题】This can help patients protect their wounds.
【单选题】This is the only way we can think of _______ him
A.
help
B.
helping
C.
helped
D.
to help
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