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【单选题】
平面与投影面的交线,称为平面的( )。A.
迹线
B.
直线
C.
斜线
D.
曲线
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举一反三
【简答题】共价键的本质是由于原子相互接近时轨道重叠,原子间通过共用自旋相反的( )使体系能量降低,从而成键。
【简答题】合同是设立、变更、终止民事权利义务关系的协议，但有关（）、（）、（）等身份关系的协议，不适用合同法。
【简答题】二十五岁已婚妇女，以往月经不规则，3～4日1～3月。现停经6+月，于停经3+月时感恶心，食欲减退。最近几日感觉胎动，检查乳头、乳晕着色加深，宫底达脐耻之间。借助多普勒探测仪可听到胎心。该病例应初步诊断为A、妊娠2个月左右 B、妊娠3个月左右 C、妊娠4个月左右 D、妊娠6个月左右 E、妊娠7个月左右 推算孕周较准确的方法是A、测血β-hCG B、测量子宫长度 C、测量腹围 D、测量雌、孕激素 E、...
【单选题】A guest has just finished telling you a long list of all the issues they have with the cleanliness of their room. Which is the best response?
A.
Make a final comment such as “Good point!”
B.
Summarize the speaker’s comments.
C.
Tell them you're sorry and that it will never happen again.
D.
Use small verbal comments such as, “Ahh!”, “Oh”, “hmmm...”
【单选题】Read the text again and choose the best answer for each of the following questions. Which of the following statements is true about the way trust operates in a relationship?
A.
If the emotional orientation to a person is positive, then trust is built among people.
B.
If the emotional orientation to a person is positive, it’s impossible for people to make negative judgments.
C.
If the emotional orientation to a person is negative, then reason will remind people to be positive.
D.
If the emotional orientation to a person is negative, then reason will turn round to negative feelings.
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