治疗脑膜白血病首选的药物是（） A.长春新碱 B.环磷酰胺 C.肝_爱下问搜题

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问题单项选择题 A1/A2型题

治疗脑膜白血病首选的药物是（）

A.长春新碱

B.环磷酰胺

C.肝素

D.巯嘌呤

E.甲氨蝶呤

答案

参考答案：E

多项选择题

相对于集线器，以下关于以太网交换机描述正确的是？（）

A.扩展了网络带宽

B.分割了网络冲突域，使得网络冲突被限制在最小的范围内

C.交换机作为更加智能的交换设备，能够提供更多用户所要求的功能：优先级、虚拟局域网、远程检测等

D.交换机彻底解决了广播泛滥问题

单项选择题

B

It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch.
What is this Your skin, of course! What does your skin ask for in return for all the wonderful things it does Just a little care! So let’s learn how to take good care of our skin.
Like the heart and stomach, your skin is an organ(器官). In fact, it is the largest organ in your body. Unless there’s a problem, you may not think about your skin very much. But skin has an important job to do.
Your skin is protecting you. Your skin keeps you from getting sick. When you take care of your skin, you are helping your skin do its job. Taking care of your skin today will help you have no problems in the future.
Clean skin is happy skin! One simple way to take care of your skin is to keep it clean. Keeping your hands clean is very important. When washing your hands, use warm water. Wet your hands, and then use soap. You should wash your hands carefully everywhere.
You’ll also want to use warm water, but not too hot, when you take a bath. Use soap to clean your body. Don’t forget under your arms and behind your ears! Your face needs attention, too. It’s a good idea to wash your face once or twice a day with warm water.

What’s one of the simple ways to look after your skin ( )

A．Use warm water.

B．Keep it clean.

C．Wash it twice a day.

D．Use soap.