单项选择题

在图层蒙版中，黑色用来图像进行哪种效果

A．显示图像
B．隐藏图像

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单项选择题

Translate the following sentence from Chinese into English.
“相关的信息可以用来预测相关主体对于机会的把握及其对逆境的能力。” A.
Relevant information could be used to predict the ability of the entity to take advantage of opportunities and its ability to react to adverse situations. B.
The information could be used to predict the ability of the entity to take advantage of opportunities and its ability to react to adverse situations. C.
Relevant information could be predict the ability of the entity to take advantage of opportunities and its ability to react to adverse situations. D.
None of the above.

幼儿及工作人员在进入幼儿园之前，都必须进行，并且要调查是否与传染病患者有过接触，以及在传染病后是否已过隔离期等。

答案：体格检查