定向资产管理业务的投资范围包括资产支持证券、证券投资基金、集合资产管理计划、股票、金

图12所示零件内孔需要渗氮处理，其工艺过程如下：粗磨—渗氮—精磨。精磨后内孔的尺寸为A₁=145^+0.04₀mm，渗氮层深度要求A₂=0.3^+0.20₀mm。已知粗磨后内孔的尺寸为A₃=144.76+^0.04₀mm，试求渗氮处理工序应达到的渗氮层深度尺寸A₄及偏差。

阅读理解。根据对话内容判断下面各句，正确的写“T”，不正确的写“F”。

Zip: What's your favourite fruit, Monkey?

Monkey: I like apples. They're sweet.

Rabbit: I like fruit. But I don't like grapes. They're sour. Bananas are my favourite. They're tasty.

Zip: I like carrot juice. It's fresh and healthy. What about you, Zoom?

Zoom: I like beef, but I'm heavy now. I have to eat vegetables.

( ) 1. Monkey likes apples. They're sweet.

( ) 2. Rabbit likes grapes, because they're sour.

( ) 3. Bananas are rabbit's favourite fruit.

( ) 4. Zip likes carrot juice.

( ) 5. Zoom likes vegetables.

男性，50岁。近20天持续痰中带血。胸部听诊在左上肺可闻局限性哮鸣音，咳嗽后无改变。

首先要考虑的治疗措施是（）。

A.止血治疗

B.手术治疗

C.抗感染治疗

D.解痉治疗

E.解痉、抗感染治疗

在进位计数制中，当某一位的值达到某个固定量时，就要向高位产生进位。这个固定量就是该种进位计数制的( )。

A．尾数

B．原码

C．基数

D．阶码