选择题:Joseph was very lucky [_] with his life; he almost

题目内容:
Joseph was very lucky [_] with his life; he almost did not get out of the room.

A.to escape
B.to have escaped
C.to be escaping
D.to be escaped
参考答案:

程序性知识的表征方式主要有( )。(A)命题网络(B)产生式系统(C)图式(D)认知结构(E)E、产

程序性知识的表征方式主要有( )。(A)命题网络(B)产生式系统(C)图式(D)认知结构(E)E、产生式

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90. 在气相色谱分析中, 为了测定农作物中含硫农药的残留量, 应选用下述哪种检测器( )(本题1.

90. 在气相色谱分析中, 为了测定农作物中含硫农药的残留量, 应选用下述哪种检测器( )(本题1.0分) A、 热导池 B、 氢火焰离子化 C、 电子捕获

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