下列关于医师的良心中，错误的是A．是一种道德责任感和自我评价能力B．是对他人医疗行为

若曲线f(x)＝ax³＋ln x存在垂直于y轴的切线，则实数a的取值范围是

________．

在匀强磁场中，有一条与磁场方向垂直放置的通电直导线，电流的大小为2A，直导线上长0.4m的一段所受安培力为0.4N，则该匀强磁场的感磁应强度大小______T．若电流的大小变为4A，求这时的感磁应强度大小______T，安培力大小感磁应强度大小______N．

场景（六）某施工单位承建一台中型散装水冷壁式锅炉工程。其安装内容包括：锅炉钢架、汽包、水冷壁、过热器、省煤器、给水泵、筑炉、烘炉、煮炉及试运行等。安装过程中，该施工单位根据设计要求进行了以下工作：锅炉设备基础验收、安装测量控制、锅炉钢架和本体安装、筑炉工序交接及筑炉安全措施等。由于选用的施工标准、规范正确且执行严格，对施工过程中出现的安全情况能作出正确的判断和处理，从而保证了锅炉一次试运行成功。　　根据场景（六），回答下列问题：

锅炉钢结构分部工程竣工验收的合格质量标准：各分项工程质量应符合合格质量标准，（　），有关观感质量应符合相应的质量标准等。

A．技术交底记录完整

B．质量控制资料和文件应完整

C．施工日志完整

D．资源配置记录完整

胆碱能性荨麻疹的特点是（）

A.多由运动、受热、情绪紧张后发作

B.风团较小、数目多、消退快

C.可有全身症状

D.可用654-2治疗

E.以上均对

Learning to save money when you’re young is an important lesson and a good habit, and saving is a skill that everyone needs. Many people-adults included-do not have a good sense of saving for the long run.
I have been lucky to learn this lesson early because I have had a grass-cutting business since I was 10 years old. Of the money I make I spend about 10 percent and save the other 90.
Making sure you save and don’t spend too much is a good way to build up wealth. I have put my earnings in a bank. Many teens I know spend all the money they earn so it never has a chance to grow. Young people should realize that their teenage years are a great time to begin saving.
At high school many parents pay for almost everything, so your expenses can be small. If you have a job, you should have fun with some of the money. But you should also save some so that it will grow. Then you can begin planning for your future. When you spend money, you not only lose that money, but also lose the interest you could have earned by saving it.
After high school, college is expensive and then "real" life begins, with expenses such as food and rent. If you can hold onto a good percentage of the money you earn as a teen, going to college and buying a house will be much easier. ______, the more time the money has to grow. If you are in your thirties without any savings, you will always have to struggle. The earlier you begin saving, the easier it is to create a nest egg.
Later in life it can be hard to start saving because general costs of living are more expensive and you may only have enough to pay your bills. If you want to buy a house and have a family, you need money to start with, which comes from saving.
Many say money cannot make you happy, and this is true. But money can help you to lead a secure life.
Saving early will mean you will have to work for fewer years when you are older. It will also allow you to spend time doing the things that you want to do.
In addition to this, it will mean you can live the way you want to without worrying.

Which sentence in the passage is the closest in meaning to the following one
As long as you save early, you’ll do less work to live well at your old age.