¡¾ÌâÄ¿¡¿Èçͼ¼×ËùʾÊÇÒ»¸ö¼òµ¥µÄ¶àÓõç±íµÄµç·ԭÀíͼ¡£

£¨1£©µ±±ÕºÏ¿ª¹Ø________£¬¶Ï¿ª¿ª¹Ø________£¬¿É×÷µçÁ÷±íÓã»

£¨2£©µ±±ÕºÏ¿ª¹Ø________£¬¶Ï¿ª¿ª¹Ø________£¬¿É×÷µçѹ±íÓã»

£¨3£©µ±±ÕºÏ¿ª¹Ø________£¬¶Ï¿ª¿ª¹Ø________£¬¿É×÷Å·Ä·±íÓã»

£¨4£©Ä³¸ö¶àÓõç±íµÄÃæ°åÈçͼÒÒËùʾ£¬Èô±íÍ·ÂúÆ«µçÁ÷Ϊ1mA£¬ÄÚ×èΪ1k¦¸£¬ËùÓõç³ØµÄµç¶¯ÊÆΪ1.5V£¬ÄÚ×èΪ0.5¦¸£¬Ê¹ÓÃÅ·Ä·¡Á1µ²£¬Èô°Ñ¶àÓõç±íµÄºÚºì±í±Ê¶Ì½Óʱ£¬±íÕëÇ¡ºÃÖ¸ÔÚµçÁ÷Âú¿Ì¶È´¦£¬Ôò´Ëʱŷķ±íµÄÄÚµç×èֵΪ________¡£A¡¢C¡¢E¿Ì¶È´¦¶ÔÓ¦µÄµç×èÖµ·Ö±ðÊÇ________¡¢________¡¢________¡£

¡¾´ð°¸¡¿£¨1£©S1£»S2¡¢S3 £¨2£©S2£»S1¡¢S3 £¨3£©S3£»S1¡¢S2 £¨4£©1500¦¸£»¡Þ£»1500¦¸£»0

¡¾½âÎö¡¿£¨1£©ÓÉͼʾµç·ͼ¿ÉÖª£¬µ±±ÕºÏ¿ª¹ØS1£¬¶Ï¿ª¿ª¹ØS2¡¢S3£¬¿É×÷µçÁ÷±íÓã»

£¨2£©ÓÉͼʾµç·ͼ¿ÉÖª£¬µ±±ÕºÏ¿ª¹ØS2£¬¶Ï¿ª¿ª¹ØS1¡¢S3£¬GÓ붨ֵµç×è´®Áª£¬¿É×÷µçѹ±íÓã»

£¨3£©ÓÉͼʾµç·ͼ¿ÉÖª£¬µ±±ÕºÏ¿ª¹ØS3£¬¶Ï¿ª¿ª¹ØS1¡¢S2£¬GÓëµçÔ´ÏàÁ¬£¬¿É×÷Å·Ä·±íÓã»

£¨4£©Å·Ä·±íÄÚ×裺RÄÚ===1500¦¸£»±íÍ·ÂúÆ«µçÁ÷Ϊ1mA£¬A¡¢B¡¢C¡¢D¡¢Eƽ·Ö±íʾ¿Ì¶ÈµÄÄǶÎÔ²»¡AE£¬Ôò£ºIA=0mA£¬IC=0.5mA£¬IE=1mA£¬Óɱպϵç·µÄÅ·Ä·¶¨ÂÉ¿ÉÖª£¬A¡¢C¡¢E¿Ì¶È´¦¶ÔÓ¦µÄµç×èÖµ·Ö±ðÊÇ¡Þ¦¸£» 1500¦¸£»0¦¸¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿¶ÌÎÄ¸Ä´í¡£

¼Ù¶¨Ó¢Óï¿ÎÉÏÀÏʦҪÇóͬ×ÀÖ®¼ä½»»»ÐÞ¸Ä×÷ÎÄ£¬ÇëÄãÐÞ¸ÄÄãͬ×ÀдµÄÒÔÏÂ×÷ÎÄ¡£ÎÄÖй²ÓÐ10´¦ÓïÑÔ´íÎó£¬Ã¿¾äÖÐ×î¶àÓÐÁ½´¦¡£´íÎó½öÉæ¼°Ò»¸öµ¥´ÊµÄÔö¼Ó¡¢É¾³ý»òÐ޸ġ£

Ôö¼Ó£ºÔÚȱ´Ê´¦¼ÓÒ»¸ö©×Ö·ûºÅ()£¬²¢ÔÚÆäÏÂÃæд³ö¸Ã¼ÓµÄ´Ê¡£

ɾ³ý£º°Ñ¶àÓàµÄ´ÊÓÃ(£Ü)»®µô¡£

Ð޸ģºÔÚ´íµÄ´ÊÏ»®Ò»ºáÏߣ¬²¢ÔڸôÊÏÂÃæд³öÐ޸ĺóµÄ´Ê¡£

×¢Ò⣺1. ÿ´¦´íÎó¼°ÆäÐ޸ľù½öÏÞÒ»´Ê£»

2. Ö»ÔÊÐíÐÞ¸Ä10´¦£¬¶àÕߣ¨´ÓµÚ11´¦Æ𣩲»¼Æ·Ö¡£

Dear Jane,

It is four days since mother receives the operation. She is feeling much more better. The doctors told me the operation was successful, but because her old age she had to stay in hospital for other two weeks. The doctors also say it was quite necessary for him to do so. We expect to get a full report in two and three days. Please tell the good news to the rest of the family as soon as possible. You needn¡¯t come here. I¡¯m able to look at mother by myself. You can send some flower to her. She will feel very happily.

Yours,

Mary

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿¶ÌÎĸĴí(¹²10СÌ⣻ÿСÌâl·Ö£¬Âú·Ö10·Ö)

¼Ù¶¨Ó¢Óï¿ÎÉÏÀÏʦҪÇóͬ×ÀÖ®¼ä½»»»ÐÞ¸Ä×÷ÎÄ£¬ÇëÄãÐÞ¸ÄÄãͬ×ÀдµÄÒÔÏÂ×÷ÎÄ¡£ÎÄÖй²ÓÐ10´¦ÓïÑÔ´íÎó£¬Ã¿¾äÖÐ×î¶àÓÐÁ½´¦£¬Ã¿´¦´íÎó½öÉæ¼°Ò»¸öµ¥´ÊµÄÔö¼Ó¡¢É¾³ý»òÐ޸ġ£

Ôö¼Ó£ºÔÚȱ´Ê´¦¼ÓÒ»¸ö©×Ö·ûºÅ(¡Ä)£¬²¢ÔÚÆäÏÂÃæд³ö¸Ã¼ÓµÄ´Ê¡£

ɾ³ý£º°Ñ¶àÓàµÄ´ÊÓÃбÏß(£Ü)»®µô¡£

Ð޸ģºÔÚ´íµÄ´ÊÏ»­Ò»ºáÏߣ¬²¢ÔڸôÊÏÂÃæд³öÐ޸ĺóµÄ´Ê¡£

×¢Ò⣺

1. ÿ´¦´íÎó¼°ÆäÐ޸ľùÏÞÒ»´Ê£»

2. Ö»ÔÊÐíÐÞ¸Ä10´¦£¬¶àÕß(´ÓµÚ11´¦Æð)²»¼Æ·Ö¡£

I start working part-time at Pizza Hut in December 1989, where I was a freshman in a high school. The large number of parents in my small town encouraged teenagers work in the service industry after school and on the weekend. Much of my closest friends also worked at Pizza Hut and our wonderful memories was made under that red roof. All new employees started by wash dishes and busing tables original. If they proved their ability to do something well in difficult circumstance, they would learn to make pizzas, to cut and serve for them, and to take orders.

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬ÒÑ֪ƽÐаåµçÈÝÆ÷Á½¼«°å¼ä¾àÀëd£½4 mm£¬³äµçºóÁ½¼«°åµçÊƲîΪ120 V¡£A°å´øÕýµç£¬ÈôËüµÄµçÈÝΪ3 ¦ÌF£¬ÇÒPµ½A°å¾àÀëΪ1 mm¡£Çó£º

£¨1£©Ã¿¸ö¼«°åµÄ´øµçºÉÁ¿£»

£¨2£©Ò»¸öµç×ÓÔÚPµã¾ßÓеĵçÊÆÄÜ£»

£¨3£©Ò»¸öµç×Ó´ÓB°å³ö·¢µ½A°å»ñµÃµÄ¶¯ÄÜ£»

£¨4£©Á½°å¼äµÄµç³¡Ç¿¶È¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿ÈçͼËùʾΪµç¶¯»úÌáÉýÖØÎïµÄ×°Ö㬵綯»úÏßȦµÄµç×èΪr£½1 ¦¸£¬µç¶¯»úÁ½¶ËµçѹΪ5 V£¬µç·ÖеĵçÁ÷Ϊ1 A£¬ÎïÌåAÖØ20 N¡£ºöÂÔÒ»ÇÐĦ²Á£¬Çó£º

£¨1£©µç¶¯»úÏßȦµç×èÏûºÄµÄÈȹ¦ÂÊΪ¶àÉÙ£¿

£¨2£©µç¶¯»úÊäÈ빦ÂʺÍÊä³ö¹¦Âʸ÷ÊǶàÉÙ£¿

£¨3£©10 sÄڵ綯»ú¿ÉÒÔ°ÑÖØÎïÔÈËÙÌáÉý¶à¸ß£¿

£¨4£©Õą̂µç¶¯»úµÄ»úеЧÂÊÊǶàÉÙ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿¶ÌÎÄ¸Ä´í£¨Ã¿Ð¡Ìâ1·Ö£¬Âú·Ö10·Ö£©

¼Ù¶¨Ó¢Óï¿ÎÉÏÀÏʦҪÇóͬ×ÀÖ®¼ä½»»»ÐÞ¸Ä×÷ÎÄ£¬ÇëÄãÐÞ¸ÄÄãͬ×ÀдµÄÒÔÏÂ×÷ÎÄ¡£ÎÄÖй²ÓÐ10´¦ÓïÑÔ´íÎó£¬Ã¿¾äÖÐ×î¶àÓÐÁ½´¦¡£´íÎóÉæ¼°Ò»¸öµ¥´ÊµÄÔö¼Ó¡¢É¾³ý»òÐ޸ġ£

Ôö¼Ó£ºÔÚȱ´Ê´¦¼ÓÒ»¸ö©´Ê·ûºÅ(¡Ä)£¬²¢ÔÚÆäÏÂÃæд³ö¸Ã¼ÓµÄ´Ê¡£

ɾ³ý£º°Ñ¶àÓàµÄ´ÊÓÃбÏß(/)»®µô¡£

Ð޸ģºÔÚ´íµÄ´ÊÏ»®Ò»ºáÏߣ¬²¢ÔڸôÊÏÂÃæд³öÐ޸ĺóµÄ´Ê¡£

×¢Ò⣺

1. ÿ´¦´íÎó¼°ÆäÐ޸ľù½öÏÞÒ»´Ê£»

2. Ö»ÔÊÐíÐÞ¸Ä10´¦£¬¶àÕß(´ÓµÚ11´¦Æð)²»¼Æ·Ö¡£

It is common for students to find part-time job. Last summer holiday, I had once worked as a waiter at a restaurant. At first I couldn¡¯t stand the hard work¡­ But with time goes by, I came to realize that I did the meaningful thing. First, I made some money, what allowed me to buy birthday gifts for my friends with asking my parents for money. But I began to learn about the value of money. Besides, I also learned how to get along with other. In a word, the part-time job at the restaurants was great and I got some valuably work experience from it.

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿ÈçͼÊÇÒ»×é¼ìÑéÂÈÆøÐÔÖʵÄ×°Öá£

(1)ÏֹرջîÈûK£¬ÈôÓÐÉ«²¼ÌõÊǸÉÔïµÄ£¬ÈÜÒºBΪŨÁòËᣬÔòÓÐÉ«²¼Ìõ________£»ÈôÈÜÒºBΪˮ£¬ÔòÓÐÉ«²¼Ìõ________£»ÈôÈÜÒºBΪ±¥ºÍµÄNaHCO3ÈÜÒº£¬ÔòÓÐÉ«²¼Ìõ________¡£

(2)ÏÖ´ò¿ªK£¬ÈÜÒºBΪÇâÑõ»¯ÄÆÈÜÒº£¬Í¨ÈëµÄCl2ÊÇʪÈóµÄ£¬²¼ÌõÊǸÉÔïµÄ£¬ÔòÓÐÉ«²¼Ìõ________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿ÎªÅжÏÏßȦÈÆÏò£¬¿É½«ÁéÃôµçÁ÷¼ÆGÓëÏßȦLÁ¬½Ó£¬ÈçͼËùʾ¡£ÒÑÖªÏßȦÓÉa¶Ë¿ªÊ¼ÈÆÖÁb¶Ë£»µ±µçÁ÷´ÓµçÁ÷¼ÆG×ó¶ËÁ÷Èëʱ£¬Ö¸ÕëÏò×óƫת¡£

£¨1£©½«´ÅÌúN¼«ÏòÏ´ÓÏßȦÉÏ·½ÊúÖ±²åÈëLʱ£¬·¢ÏÖÖ¸ÕëÏò×óƫת¡£¸©ÊÓÏßȦ£¬ÆäÈÆÏòΪ£ß£ß£ß£ß£ß£¨Ñ¡Ì˳ʱÕ롱»ò¡°ÄæʱÕ롱£©¡£

£¨2£©µ±ÌõÐδÅÌú´ÓͼÖеÄÐéÏßλÖÃÏòÓÒÔ¶ÀëLʱ£¬Ö¸ÕëÏòÓÒƫת¡£¸©ÊÓÏßȦ£¬ÆäÈÆÏòΪ£ß£ß£ß£ß£ß£ß£¨Ñ¡Ì˳ʱÕ롱»ò¡°ÄæʱÕ롱£©¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖеØÀí À´Ô´£º ÌâÐÍ£º

¡¾ÌâÄ¿¡¿ÖÊÁ¿Îª10 gµÄ×Óµ¯£¬ÒÔ300 m/sµÄˮƽ³õËÙ¶ÈÉäÈëÒ»¿éÊúÖ±¹Ì¶¨µÄľ°å£¬°Ñľ°å´ò´©£¬×Óµ¯Éä³öµÄËÙ¶ÈÊÇ200 m/s¡£Èôľ°åºñ¶ÈΪ10 cm£¬Çó×Óµ¯¶Ôľ°åµÄƽ¾ù×÷ÓÃÁ¦¡£

СÃ÷ͬѧµÄ×ö·¨ÈçÏ£¬ÄãͬÒâËûµÄ½â·¨Âð£¿

ÓÉÔ˶¯Ñ§¹«Ê½£ºv2£­£½2axµÃ£º

a£½£½ m/s2£½£­2.5¡Á103 m/s2

ÓÉÅ£¶ÙµÚ¶þ¶¨ÂÉ£º

F£½ma£½10¡Á£¨£­2.5¡Á103£©N£½£­2.5¡Á104 N¡£

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸