皮皮学，免费搜题
登录
搜题
【多选题】
凯恩斯的流动性偏好利率理论,认为货币的供应量由中央银行直接控制,货币的需求量起因于( )A.
交易动机
B.
预防动机
C.
投机动机
D.
投资动机
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】在天气晴朗的夏季，将用全素营养液培养的植株置于密闭的玻璃罩内放在室外进行培养，假定玻璃罩内植物的生理状态与自然环境中相同。每隔一段时间用CO 2 浓度检测仪测定玻璃罩内CO 2 浓度，绘制成下图所示曲线。据图得出的判断中错误的是（）
A.
影响曲线BC段变缓的主要因素是温度
B.
CO 2 浓度下降从D点开始，说明植物进行光合作用是从D点开始的
C.
只有DH段存在有机物净积累
D.
植株体内的有机物在一昼夜内有所增加
【简答题】Write English full name and Chinese translation 。 GPS
【简答题】Write English full name and Chinese translation 。 USB
【单选题】Definition of Laser s canning c onfocal m icroscopy
A.
It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid.
B.
Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane .
C.
T he specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen .
D.
The smallest distance between two points on a specimen that can still be distinguished as two separate entities .
E.
They are made by identical immune cells from a unique parent cell .
【简答题】Write English full name and Chinese translation 。 RAM
【简答题】Write English full name and Chinese translation 。 RFID
【简答题】Write English full name and Chinese translation 。 CPU
【简答题】Write English full name and Chinese translation 。 AI
相关题目：