存储PSD格式的文件时以下信息可以被保存的有（）。 A.对比度 B.饱和度 C.亮度

颅内动脉瘤最好发的部位是()

A．Willis动脉环的分叉处

B．颈内动脉

C．大脑中动脉

D．大脑前动脉

E．大脑后动脉

补全对话。

A: It's warm today. 1_____

B: Great!

A: Where are my shoes?

B: Come on. 2_____

A: Wait. 3_____

B: Oh, 4_____

A: 5_____

B: Sorry.

a. It's time to go.

b. Those are my shoes.

c. Let's play football.

d. They are on your feet.

e. Where are they?

We have a growing population and________we need more food.

A．even

B．besides

C．yet

D．therefore

带传动过载时会（），起到安全保护作用。

A、断裂

B、停止

C、松动

D、打滑