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【简答题】
重度智力迟滞的儿童的IQ得分范围在（ ）。
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】1 Many companies, such as IBM, have turned to multiple sales channels to sell their products and services. Companies that use multiple sales channels find that this choice has which of the following e...
A.
Using multiple channels causes confusion, both for the customer and the sales force.
B.
Using multiple channels causes harmony, as all the channels use the same salespeople.
C.
Using multiple channels causes synergy, although it takes planning to make sure the channels compliment each other instead of competing.
D.
Using multiple channels causes hostility, because the different channels bring commissions down for salespeople.
E.
Using multiple channels causes efficiency, as all the channels are managed by the same person.
【单选题】中学生小红通过物理实验发现,钟表的摆动幅度不取决于钟摆的材料或重量,而是取决于钟摆的长度。根据根据皮亚杰的认知发展阶段理论,小红的认知发展水平已达到( )
A.
感知运动阶段
B.
前运算阶段
C.
具体运算阶段
D.
形式运算阶段