题干

物理学中,一些物理量间的变化关系,常用图象来表示,下列图象表示正确的是(      )

A:汽车做匀速直线运动时其速度与运动时间之间的关系

B:通过恒定电阻的电流与其两端电压之间的关系

C:同种液体内部的压强与其深度之间的关系

D:凸透镜成实像时像距v随物距u变化的关系

上一题 下一题 0.0难度 选择题 更新时间:2019-03-01 10:42:08

答案(点此获取答案解析)

C

同类题3

任务型阅读,请阅读下面这篇文章,根据所提供的信息,完成下面的信息卡。

    We often dine out with others, but do you know some basic etiquette (礼节)? If you behave well at the table, it will make your partners happy. But if you don't know how to behave yourself, you will feel embarrassed. Here are some tips for the table etiquette.

    When helping a woman pull her chair to the table, hold it and guide it. Don t shove(碰撞)it against the back of her legs.
     If you're seated at a table with eight or fewer guests, wait for everyone to be served and for the hostess(女主人) to begin eating before you dig in. At a long banquet table, it's OK to start when several people are seated and served.

    If you prefer not to have wine while dining out, don't turn your glass upside down, and don t make a big deal of saying you don't drink. Simply place your fingertips on the rim(边缘) of the glass and say" Not today, thanks."

    When you excuse yourself to go to the restroom, just say" Please excuse me."

    When out with friends or family—even at a fancy restaurant –it's OK to ask for your leftovers(吃剩的饭菜) to be wrapped. But don't do it at a business lunch or dinner.

Information Card

The feeling you may get if you don't behave well at the table

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The number of the guests when waiting for everyone to be served

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The reason why you place your fingertips on the rim of the glass

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The time that don't ask for your leftovers to be wrapped

____

The number of suggestions for the table etiquette

____