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【单选题】
如图所示,一个质量为 m 的滑块置于倾角为 30 °的固定粗糙斜面上,一根轻弹簧一端固定在竖直墙上的 P 点,另一端系在滑块上的 p 点,直线 PQ 与斜面垂直,滑块保持静止。则
A.
弹簧可能处于状态
B.
斜面对滑块的摩擦力大小可能为零
C.
斜面对滑块的支持力大小可能为零
D.
滑块一定受到四个力作用
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A.
属于语义谬误。
B.
属于四词项错误。
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【单选题】What is the first conclusion the author reaches?
A.
American English and British English are becoming increasingly different from each other.
B.
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C.
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D.
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相关题目：
【单选题】反映活动本质特征与内在联系的知识称为是( )。
A.
感性知识
B.
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A.
spreading salt is good enough
B.
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A.
属于语义谬误。
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属于四词项错误。
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E.
违反了充足理由律。
查看完整题目与答案
【单选题】It was the first time that such a ________ had to be taken at a British nuclear power station.
A.
presentation
B.
precaution
C.
preparation
D.
prediction
查看完整题目与答案
【多选题】下列症状中，哪些是脾虚气陷证的临床表现:
A.
头晕目眩
B.
脘腹坠胀
C.
大便稀溏
D.
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E.
少气懒言
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【简答题】A.The British had won the first two battles of the Revolution. B. The British were retreating to the Charles River. C. The British were willing to sign a declaration. D. The British would attack by se...
查看完整题目与答案
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A.
American English and British English are becoming increasingly different from each other.
B.
American English and British English are becoming increasingly overlapped.
C.
American English are borrowing words from British English.
D.
American English are borrowing words from some European tribes.
查看完整题目与答案