如果显示器在室内湿度低于30%的环境中运行，因显示器机械摩擦部分在湿度低的环境中特别

辨字组词。

尘（　　）丘（　　）境（　　）肢（　　）仆（　　）县（　　）栏（　　）爪（　　）

尖（　　）兵（　　）镜（　　）技（　　）朴（　　）昙（　　）拦（　　）瓜（　　）

下列属于一级邮区中心局的有（）。

A.北京

B.上海

C.深圳

D.广州

E.沈阳

if p、q and r are Boolean variables, which of the following formulas is (are) autological ( ) Ⅰ. (┐P→q)→(p∨q) Ⅱ. (p→r)∧(┐p→q) ∧┐r

A．none

B．Ⅰ only

C．Ⅱ only

D．Ⅰ and Ⅱ

Jasper is a great painter.He is ____ Picasso. [    ]

A. the same great as

B. as great painter as

C. as great a painter as

D. such great a painter as

客户已经兑换的积分称为已兑换积分，达到兑换标准兑换后剩余的积分称为（）。