皮皮学,免费搜题
登录
搜题
【单选题】
水溶性生物碱分离的常用方法是
A.
碘化汞钾沉淀法
B.
硅钨酸沉淀法
C.
铵盐沉淀法
D.
苦味酸沉淀法
E.
碘化铋钾沉淀法
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】The key point in distribution is whether the product is ( )where the customers wishes to consume it.
A.
response
B.
available
C.
convenient
D.
analysis
【判断题】鉴于正弦交流电路中,电流与电压的方向和大小是随着时间发生变化的,因此在交流电路中引入电流、电压的参考方向是没有意义的。
A.
正确
B.
错误
【判断题】The key to a successful product presentation is to describe the product properly.
A.
正确
B.
错误
【判断题】在递交名片时,应单手递名片。( )
A.
正确
B.
错误
【判断题】The use of key words searching tools is for us to search for and copy the product key words.
A.
正确
B.
错误
【判断题】鉴于正弦交流电路中,电流与电压的方向和大小是随时间发生变化的,因此在交流电路中引入电流、电压的参考方向是没有意义的。
A.
正确
B.
错误
【单选题】Which of the following is the key to success in product sales?
A.
The way to sell goods.
B.
A good product.
C.
The one who makes a product.
D.
A nice colour.
【判断题】Setting the right price for a product can be the key to success or failure in the international marketplace.
A.
正确
B.
错误
【单选题】三相对称电源,U相电压 ∠0oV,电源联结方式为星形联结,则V相电压 =( )V。
A.
220∠-120º
B.
220∠-90º
C.
380∠-120º
【单选题】The PCB design and layout forms an integral part of the design of the whole electronic product, and it can be the key to the successof the product meeting its performance requirements in many instance...
A.
PCB设计
B.
成功的关键
C.
电子产品
D.
满足其性能
相关题目: