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问题 单项选择题

以下说法错误的是( )。

A．组合框分为结合型与非结合型

B．结合型组合框能保存选择的值

C．非结合型组合框中选择的值可以用来决定其他控件的内容

D．用户只能利用向导来创建“组合框”

答案

参考答案：D

单项选择题

As one works with color in a practical, or experimental way, one is impressed by two apparently unrelated facts. Color as seen is a mobile, changeable thing (1) to a large extent on the relationship of the color (2) other colors (3) simultaneously. It is not (4) in its relation to the direct stimulus which (5) it. On the other hand, the properties of surfaces that give (6) to color do not seem to change greatly under a wide variety of illumination color, usually (but not always) looking much the same in artificial light as in daylight. Both of these effects seem to be (7) in large part to the mechanism of color (8) .

When the eye is (9) to a colored area, there is an immediate readjustment of the (10) of the eye to color in and around the area (11) . This readjustment does not promptly affect the color seen but usually does affect the next area to which the (12) is shifted. The longer the time of viewing, the higher the (13) , and the larger the area, the greater the effect will be (14) its persistence in the (15) viewing situation. As indicated by the work of Wright and Schouten, it appears that, at (16) for a first approximation, full adaptation takes place over (17) time if the adapting source is moderately bright and the eye has been in (18) darkness just previously. Also, (19) of the persistence of the effect if the eye is shifted around from one object to another, all of which are at similar brightness or have similar colors, the adaptation will tend to become (20) over the whole eye.

4（）

A.fixed

B.firm

C.bound

D.open
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单项选择题

某小规模纳税工业企业2000年11月初“应交税金——应交增值税”账户借方余额为 2000元，当月购进材料100000元，取得的增值税专用发票注明的增值税税额为17000元；当月销售产品800000元(不含税)。该企业本月应交增值税为( )元。

A．50000

B．46000

C．29000

D．33000
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