皮皮学，免费搜题
登录
搜题
【单选题】
用A、B、C三个已知变量加权求均值计算新变量D，其中A变量有个别个案为缺失值，则新变量D对应个案数值为（ ）
A.
0
B.
系统缺失值
C.
B 和C的加权平均值
D.
用户缺失值
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
【判断题】In foreign trade,sale by actual qualityis often used in consignment, auction and exhibition. It adapts to the business in fresh goods, antique, handcraft and calligraphy and painting.
A.
正确
B.
错误
查看完整题目与答案
【单选题】The rising crime rate is ________ major concern of ________ sociey.
A.
the, the
B.
a, /
C.
a, the
D.
/, the
查看完整题目与答案
【判断题】对非智能对象图层的图像进行反复的变换操作,会影响图像的质量。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In actual business, who issues the offer?
A.
the seller or the buyer
B.
the seller
C.
the buyer
D.
the carrier
查看完整题目与答案
【单选题】__________ mainly studies the basic operation processes of goods or services transactions between different countries or regions, including the basic principles of buying and selling goods or services...
A.
International trade practice
B.
International trade
C.
Trade in services
D.
International investment
查看完整题目与答案
【判断题】The body of the letter is the most important part in a business letter, which carries the actual message you are sending.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Sometimes the ideas in a aren’t much different from the ( ) of an actual business (real).
查看完整题目与答案
【单选题】The practice can occur in actual business meetings where they _____________ some time to make it possible to reflect on their actions and to correct them.
A.
set back
B.
set aside
C.
set forth
D.
set out
查看完整题目与答案
【单选题】In actual business, when the FOB term is used for the transaction, the buyer often entrusts the seller to charter the ship and book the shipping space, and the buyer will take the charges. If the ship...
A.
The seller is not liable, and the risk is borne by the buyer
B.
The seller assumes the responsibility, and the risk is also borne by the seller
C.
The buyers and the seller share the responsibility and the risk
D.
Neither the buyer nor the seller assumes the responsibility, and the contract ceases to be performed
查看完整题目与答案
【判断题】对非智能对象图层的图像进行反复的变换操作,会影响图像的质量。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【判断题】In foreign trade,sale by actual qualityis often used in consignment, auction and exhibition. It adapts to the business in fresh goods, antique, handcraft and calligraphy and painting.
A.
正确
B.
错误
查看完整题目与答案
【单选题】The rising crime rate is ________ major concern of ________ sociey.
A.
the, the
B.
a, /
C.
a, the
D.
/, the
查看完整题目与答案
【判断题】对非智能对象图层的图像进行反复的变换操作,会影响图像的质量。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In actual business, who issues the offer?
A.
the seller or the buyer
B.
the seller
C.
the buyer
D.
the carrier
查看完整题目与答案
【单选题】__________ mainly studies the basic operation processes of goods or services transactions between different countries or regions, including the basic principles of buying and selling goods or services...
A.
International trade practice
B.
International trade
C.
Trade in services
D.
International investment
查看完整题目与答案
【判断题】The body of the letter is the most important part in a business letter, which carries the actual message you are sending.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Sometimes the ideas in a aren’t much different from the ( ) of an actual business (real).
查看完整题目与答案
【单选题】The practice can occur in actual business meetings where they _____________ some time to make it possible to reflect on their actions and to correct them.
A.
set back
B.
set aside
C.
set forth
D.
set out
查看完整题目与答案
【单选题】In actual business, when the FOB term is used for the transaction, the buyer often entrusts the seller to charter the ship and book the shipping space, and the buyer will take the charges. If the ship...
A.
The seller is not liable, and the risk is borne by the buyer
B.
The seller assumes the responsibility, and the risk is also borne by the seller
C.
The buyers and the seller share the responsibility and the risk
D.
Neither the buyer nor the seller assumes the responsibility, and the contract ceases to be performed
查看完整题目与答案
【判断题】对非智能对象图层的图像进行反复的变换操作,会影响图像的质量。
A.
正确
B.
错误
查看完整题目与答案