按什么字母键可以使图像进入“快速蒙版”状态?()A、F  B、Q  C、T  D、A

题型:单项选择题

问题:

按什么字母键可以使图像进入“快速蒙版”状态?()

A、F 

B、Q 

C、T 

D、A

考点:计算机科学技术photoshopphotoshop题库
题型:单项选择题

阅读理解。

     English breakfast is a very big meal----eggs, tomatoes, tea, coffee… For many people lunch is a quick

(快的) meal. In cities there are a lot of sandwich (三明治) bars (快餐店). People can buy sandwiches there.

Students can have a hot meal at school, but many just take a sandwich, a drink and some fruit from home.

     "Tea" means two things. It is a drink and a meal! Some people have afternoon tea, with sandwiches, cakes

and a cup of tea.

     They usually have supper quite early (早的), between 6:00 and 8:00,and often all the family eats together

(一起).

     People often get take-away (外卖) meals---they buy the food outside and then bring it home to eat.

1. Many people in England have a _______ breakfast and a _______ lunch.

A. quick; small

B. little; big

C. big; quick

D. slow; big

2. Students usually have lunch _______.

 A. at home

B. at school

C. outside

D. in the restaurant

3. What don't they have when they have afternoon tea? 

A. Chicken

B. Sandwiches

C. Cakes

D. A cup of tea.

4. How long do they have the evening meal?

A. Six or eight hours.

B. Half an hour.

C. We don't know.

D. About two hours.

5. When they get a take-away meal. They eat it _______.

A. at home

B. in the school

C. outside

D. in the bars

题型:单项选择题

-----_________ you ________ your homework yet? 

-----Yes, I ________ it ten minutes ago.

A. Did; do; finished      B. Have; done; have finished        C. Have; done; finished

题型:单项选择题

下列不属于肿瘤阳性显像剂的是()。

A.Tl

B.Tc-MIBI

C.Tc-DMSA

D.F-FDG

E.Ga

题型:单项选择题

2013年12月2日1时30分长征三号乙运载火箭将     从西昌卫星发射中心发射。并携带中国的第一艘月球车      ,于12月14日21时实现中国首次月面软着陆。

A.嫦娥三号蛟龙号

B.嫦娥二号蛟龙号

C.嫦娥三号玉兔号

D.嫦娥二号玉兔号

题型:单项选择题

声音的音量由声波的(1)决定的,音调是由声波的(2)决定的,音色是由混入基音的(3)决定的。

空白(3)处应选择()

A.周期

B.基频

C.泛音

D.振幅

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