阅读《秋水》中的一段文字,回答下列问题:井蛙不可以语于海者,拘于虚也;夏虫不可以语于冰者,笃于时也;曲士不可以语于道者,束于教也。今尔出于崖溪,观于大海,乃知尔丑,尔将可与语大理矣。(1)解释这段文字中画横线字的含义。虚:笃:丑:(2)这段话中哪句话表达了作者的主要观点 (3)这段话运用了哪种论证方法 (4)这段话使用了哪种性质的论据 (5)举例说明这段话运用了哪些修辞手法
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物体放在倾角为θ的固定斜面上恰好沿斜面匀速下滑,则该物体与斜面之间的动摩擦因数μ=__________
一辆5 t载重汽车开上一个坡路,坡路长s=100 m,坡顶和坡底的高度差h=10 m,汽车上坡前的速度是10 m/s,上到坡顶时减为5.0 m/s,汽车受到的摩擦阻力是车重的0.05倍.求汽车的牵引力(g取10 m/s2)
提示:Tom和Lester两人正在聊天,彼此问对方上一个周末是怎样度过的。Tom说他上星期六晚上同Simon一道吃了饭,而Lester说他星期日去电影院看了一场电影。 Tom: 51 ? Lester: Not bad.What about you? Tom:Not bad ,either.What did you do last weekend? Lester: Well, 52 . Tom :
What is implied but NOT stated by the author is that_______()
A. breakfast does not affect performance
B. Dr.Erresto is engaged in research work at an institution of higher learning
C. not eating breakfast might affect the health of children
D. Professor Bender once taught college courses in nutrition in London