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【简答题】
现提供稀盐酸、稀硫酸、大理石、锌粒、高锰酸钾、氯酸钾、二氧化猛、双氧水,请根据下图所示装置回答问题(所选用装置用字母序号表示): (1)写出图中编号①②③的名称: ①______  ②______ ③______ (2)若实验室用A作为气体发生装置制取一种常见气体,请写出气体制取的一个化学反应方程式______.不能选用的收集装置是______. (3)用B装置和提供的药品可以制取的气体的有(写化学式)______,其中只能用D装置收集的气体是______,写出制取该气体的化学方程式______. (4)某同学用B和C制取和收集某种气体,操作步骤如下: ①按图示分别组装好发生装置和收集装置    ②在B中加入封住长颈漏斗下端出口    ③用橡皮管连接B、C    ④检查气密性    ⑤⑥在B中锥形瓶中装入固体药品并塞紧胶塞   ⑦将液体试剂从长颈漏斗上部注入     ⑧收集气体 回答下列问题: I、写出步骤④的具体操作______,气密性良好的标志是______; II、写出步骤⑤的具体操作______; III、药品和步骤⑦以前的操作都没问题,收集装置也没问题,但收集不到气体,其原因可能是______.
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【简答题】Paragraph 13. 1. fortnight: explain. 2. look into: explain and make up a sentence. 3. in search of: explain and make up a sentence. 4. parked out back: explain. 5. a pile of: explain. 6. fill out: mak...
【多选题】对于人的头型,中国传统的人相有 “ 八格 ” 之说,下面选项中,属于 “ 八格 ” 的有
A.
甲 由 申
B.
田 目 国
C.
国 风 用
D.
日 月 风
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【判断题】在夜间施工的通信工程均需要计列夜间施工增加费。
A.
正确
B.
错误
【简答题】A. happiest B. make a fire C. leaped D. belonged E. in search of F. paws G. hunting H. lay I. mantle J. gro...
【单选题】在放大电路中,静态工作点过低,会引起( )。
A.
.相位失真
B.
截止失真
C.
饱和失真
D.
交越失真
【单选题】【A1】
A.
SEARCH, DON'T FIL E.
B.
MAKE AN APPOINTMENT RIGHT AFTER WOR K.
E.
FIGURE OUT YOUR CORE WORK ACTIVITIES. D.AVOID INSTANT MESSAGING AND TURN OFF PHONES. E.SAY NO. WHAT WOULD YOU DO IF YOU HAD AN EXTRA HOUR A DAY? THIS IS A COMMON BARRIER I RUN INTO WHEN I WRITE ABOUT MAKING POSITIVE LIFE CHANGES:PEOPLE DON'T HAVE TIME TO PURSUE THEIR DREAMS.PEOPLE DON'T HAVE TIME TO EXERCIS E.PEOPLE DON'T HAVE TIME TO GET ORGANIZE D.WELL, IT'S TIME TO MAKE TIM E.BY USING SOME COMBINATION OF THE FOLLOWING, YOU CAN FREE UP AN HOUR OR MORE A DAY.FIND THE ONES THAT WORK FOR YOU (NOT ALL WILL WORK FOR EVERYONE), AND THEN CARVE OUT THAT HOUR A DAY.THEN MAKE SURE YOU USE THAT EXTRA HOUR A DAY IN THE BEST WAY POSSIBLE—BOOK THAT HOUR ON YOUR CALENDAR FOR SOMETHING YOU REALLY, REALLY WANT TO DO, WHETHER THAT'S WORK ON A GOAL, WRITE A BOOK, START A BUSINESS, EXERCISE, READ MORE, OR WHATEVER.DON'T SQUANDER THIS GIFT OF TIME! 【A1】______ WHETHER IT'S EXERCISE OR WORKING ON SOME OTHER GOAL, MAKE AN APPOINTMENT TO DO IT RIGHT WHEN YOU GET OUT OF WORK (AT 5 P. M., FOR EXAMPLE).THIS WORKS ESPECIALLY WELL IF YOU HAVE TO MEET SOMEONE ELSE, SUCH AS A WORKOUT PARTNER OR OTHER GROUP OR TEAM OR COACH OR PARTNER, YOU'LL BE SURE TO MEET THE APPOINTMENT, WHICH MEANS YOU WON'T STICK AROUND WORK TOO LONG, AND YOU'LL BE SURE TO FINISH ALL YOUR TASKS ON TIME SO YOU CAN LEAVE ON TIM E.THIS MAKES YOU MORE EFFICIENT IN THE AFTERNOON ESPECIALLY. 【A2】______ I'M NOT SAYING THESE TYPES OF INSTANT COMMUNICATION DON'T HAVE THEIR USES, BUT IF THEY'RE ALWAYS ON AND YOU'RE ALWAYS AVAILABLE, YOU'RE ALWAYS AT THE MERCY OF OTHERS. IN-STEAD, JUST MAKE YOURSELF AVAILABLE AT SET TIMES IF NECESSARY, OR NOT AT ALL IF IT'S NOT NECESSARY.YOU DON'T HAVE TO TURN OFF PHONES ALL DAY LONG, BUT YOU SHOULD HAVE SOME UNBROKEN BLOCKS OF TIME WHEN YOU DON'T TAKE CALLS, SO YOU CAN CONCENTRATE ON YOUR IMPORTANT TASKS.THIS ALLOWS YOU TO GET MORE DONE IN LESS TIME, AS PHONE CALLS CAN EAT UP CHUNKS OF YOUR DAY IF YOU LET THE M. 【A3】______ I USED TO SPEND A LOT OF TIME FILING ALL MY COMPUTER FILES AND ALL MY EMAILS INTO NICE, ORGANIZED FOLDERS.I'D SPEND TIME EVERY DAY DOING THIS.NOW, I JUST ARCHIVE EVERYTHING, ON COMPUTER AND EMAIL, AND SEARCH WHEN I NEED SOMETHIN G.WITH QUICKSILVER ON THE MAC, EVERY FILE IS WITHIN A FEW KEYSTROKES.WITH GMAIL, EVERY EMAIL IS ACCESSIBLE INSTANTLY.NO TIME SPENT FILING! 【A4】______ WHAT IS IT THAT YOU REALLY HAVE TO DO EACH DAY? I MEAN, THE STUFF YOU HAVE TO DO OR YOUR JOB WOULD FALL APART IF YOU REALLY THINK ABOUT IT, A LOT OF THE TASKS YOU DO EACH DAY (AND PHONE CALLS AND EMAILS, MENTIONED ABOVE, ARE INCLUDED IN THESE TASKS) DON'T REALLY NEED TO BE DONE EACH DAY.SOMETIMES YOU CAN DO THEM LESS OFTEN, SOMETIMES YOU DON'T NEED TO DO THEM AT ALL.IF YOU CAN LEARN TO FOCUS ON YOUR CORE ACTIVITIES, YOU CAN GET YOUR WORK DONE IN LESS TIM E. 【A5】______ ONE OF THE BIGGEST GROUPS OF TIME EATERS IS REQUESTS FROM OTHER PEOPL E.ALL DAY LONG WE GET REQUESTS, IN PERSON, ON THE PHONE, IN EMAIL, THROUGH PAPERWOR K.MEETINGS, ASSIGNMENTS, REQUESTS FOR INFORMATION, REQUESTS TO BE ON A COMMITTEE OR TEA M...THESE ARE ALL REQUESTS THAT WILL EAT UP YOUR TIM E.SAY NO TO ALL BUT THE ESSENTIALS.GET TO THE POINT. WHILE I'M A FAN OF LONG, SLOW CONVERSATIONS, IF YOU'RE TRYING TO MAKE TIME FOR GOALS, YOU NEED TO WHITTLE DOWN NEEDLESSLY LONG CONVERSATIONS—ESPECIALLY IF IT'S JUST WITH A COWORKER WHO ISN'T A CLOSE FRIEN D.IN PERSON OR ON THE PHONE, YOU NEED TO GET STRAIGHT TO THE POINT WITH A MINIMUM OF CHIT-CHAT, AND IF THE OTHER PERSON ISN'T GETTING TO THE POINT, POLITELY ASK WHAT HE NEEDS FROM YOU.
【单选题】正常运行时,压缩空气压力应维持在多少()
A.
0.6 MPa 左右
B.
0.7 MPa 左右
C.
0.8 MPa 左右
D.
0.9 MPa 左右
【单选题】以下哪一项不是云计算的关键特征?
A.
更强的单机性能
B.
快速弹性
C.
按使用付费
D.
无处不在的网络接入
相关题目:
【单选题】【A1】
A.
SEARCH, DON'T FIL E.
B.
MAKE AN APPOINTMENT RIGHT AFTER WOR K.
E.
FIGURE OUT YOUR CORE WORK ACTIVITIES. D.AVOID INSTANT MESSAGING AND TURN OFF PHONES. E.SAY NO. WHAT WOULD YOU DO IF YOU HAD AN EXTRA HOUR A DAY? THIS IS A COMMON BARRIER I RUN INTO WHEN I WRITE ABOUT MAKING POSITIVE LIFE CHANGES:PEOPLE DON'T HAVE TIME TO PURSUE THEIR DREAMS.PEOPLE DON'T HAVE TIME TO EXERCIS E.PEOPLE DON'T HAVE TIME TO GET ORGANIZE D.WELL, IT'S TIME TO MAKE TIM E.BY USING SOME COMBINATION OF THE FOLLOWING, YOU CAN FREE UP AN HOUR OR MORE A DAY.FIND THE ONES THAT WORK FOR YOU (NOT ALL WILL WORK FOR EVERYONE), AND THEN CARVE OUT THAT HOUR A DAY.THEN MAKE SURE YOU USE THAT EXTRA HOUR A DAY IN THE BEST WAY POSSIBLE—BOOK THAT HOUR ON YOUR CALENDAR FOR SOMETHING YOU REALLY, REALLY WANT TO DO, WHETHER THAT'S WORK ON A GOAL, WRITE A BOOK, START A BUSINESS, EXERCISE, READ MORE, OR WHATEVER.DON'T SQUANDER THIS GIFT OF TIME! 【A1】______ WHETHER IT'S EXERCISE OR WORKING ON SOME OTHER GOAL, MAKE AN APPOINTMENT TO DO IT RIGHT WHEN YOU GET OUT OF WORK (AT 5 P. M., FOR EXAMPLE).THIS WORKS ESPECIALLY WELL IF YOU HAVE TO MEET SOMEONE ELSE, SUCH AS A WORKOUT PARTNER OR OTHER GROUP OR TEAM OR COACH OR PARTNER, YOU'LL BE SURE TO MEET THE APPOINTMENT, WHICH MEANS YOU WON'T STICK AROUND WORK TOO LONG, AND YOU'LL BE SURE TO FINISH ALL YOUR TASKS ON TIME SO YOU CAN LEAVE ON TIM E.THIS MAKES YOU MORE EFFICIENT IN THE AFTERNOON ESPECIALLY. 【A2】______ I'M NOT SAYING THESE TYPES OF INSTANT COMMUNICATION DON'T HAVE THEIR USES, BUT IF THEY'RE ALWAYS ON AND YOU'RE ALWAYS AVAILABLE, YOU'RE ALWAYS AT THE MERCY OF OTHERS. IN-STEAD, JUST MAKE YOURSELF AVAILABLE AT SET TIMES IF NECESSARY, OR NOT AT ALL IF IT'S NOT NECESSARY.YOU DON'T HAVE TO TURN OFF PHONES ALL DAY LONG, BUT YOU SHOULD HAVE SOME UNBROKEN BLOCKS OF TIME WHEN YOU DON'T TAKE CALLS, SO YOU CAN CONCENTRATE ON YOUR IMPORTANT TASKS.THIS ALLOWS YOU TO GET MORE DONE IN LESS TIME, AS PHONE CALLS CAN EAT UP CHUNKS OF YOUR DAY IF YOU LET THE M. 【A3】______ I USED TO SPEND A LOT OF TIME FILING ALL MY COMPUTER FILES AND ALL MY EMAILS INTO NICE, ORGANIZED FOLDERS.I'D SPEND TIME EVERY DAY DOING THIS.NOW, I JUST ARCHIVE EVERYTHING, ON COMPUTER AND EMAIL, AND SEARCH WHEN I NEED SOMETHIN G.WITH QUICKSILVER ON THE MAC, EVERY FILE IS WITHIN A FEW KEYSTROKES.WITH GMAIL, EVERY EMAIL IS ACCESSIBLE INSTANTLY.NO TIME SPENT FILING! 【A4】______ WHAT IS IT THAT YOU REALLY HAVE TO DO EACH DAY? I MEAN, THE STUFF YOU HAVE TO DO OR YOUR JOB WOULD FALL APART IF YOU REALLY THINK ABOUT IT, A LOT OF THE TASKS YOU DO EACH DAY (AND PHONE CALLS AND EMAILS, MENTIONED ABOVE, ARE INCLUDED IN THESE TASKS) DON'T REALLY NEED TO BE DONE EACH DAY.SOMETIMES YOU CAN DO THEM LESS OFTEN, SOMETIMES YOU DON'T NEED TO DO THEM AT ALL.IF YOU CAN LEARN TO FOCUS ON YOUR CORE ACTIVITIES, YOU CAN GET YOUR WORK DONE IN LESS TIM E. 【A5】______ ONE OF THE BIGGEST GROUPS OF TIME EATERS IS REQUESTS FROM OTHER PEOPL E.ALL DAY LONG WE GET REQUESTS, IN PERSON, ON THE PHONE, IN EMAIL, THROUGH PAPERWOR K.MEETINGS, ASSIGNMENTS, REQUESTS FOR INFORMATION, REQUESTS TO BE ON A COMMITTEE OR TEA M...THESE ARE ALL REQUESTS THAT WILL EAT UP YOUR TIM E.SAY NO TO ALL BUT THE ESSENTIALS.GET TO THE POINT. WHILE I'M A FAN OF LONG, SLOW CONVERSATIONS, IF YOU'RE TRYING TO MAKE TIME FOR GOALS, YOU NEED TO WHITTLE DOWN NEEDLESSLY LONG CONVERSATIONS—ESPECIALLY IF IT'S JUST WITH A COWORKER WHO ISN'T A CLOSE FRIEN D.IN PERSON OR ON THE PHONE, YOU NEED TO GET STRAIGHT TO THE POINT WITH A MINIMUM OF CHIT-CHAT, AND IF THE OTHER PERSON ISN'T GETTING TO THE POINT, POLITELY ASK WHAT HE NEEDS FROM YOU.