搜题请搜索小程序“爱下问搜题”
问题 多项选择题

有关心电图正确的是

A．S-T表示心室肌全部处于兴奋状态

B．P-R间期表示兴奋自窦房结传导至心室开始兴奋的时间

C．P波表示心房的兴奋过程

D．T波反映心室的复极过程

E．QRS波群表示左右心室的收缩过程

答案

参考答案：A, B, C, D

单项选择题

Questions from 31 to 35 are based on the following passage: A garment label is more than just a piece of fabric. It is something that draws the attention of customers to the garment. In today’s times, labels actually help in selling a garment. Customers decide whether to buy a piece of apparel or not on the basis of its label. Labels communicate to the customer what types of materials have been used in making the garment. Different manufacturers use their own special type of labels to create their own distinct identity. A label might be custom-made by a manufacturer to make it unique. Beautiful, customized labels add to the beauty and style of the garment.Each brand produced by the manufacturer is usually distinguishable on the basis of a special symbol, color or word. This is reflected through the label. Garment labels can be made using several fabrics, in different types of finishes and can be attached to the garment in different styles. The fabrics that are commonly used in the preparation of labels are satin, damask, semi-damask and taffeta. In some cases, cotton, canvas and felt are also used in making labels. Satin is the most used fabric in preparing labels. Leather labels are generally used in case of jeans and pants. PVC labels are used in pants and bags. Satin is soft on the skin and looks very pretty initially. However, it is not one of the best fabrics to be used in labels because it is very thin and can snag easily. Labels made using taffeta are stiffer than those of satin and do not snag as easily. However, taffeta labels can irritate the skin of the customers. Damask and semi-damask are ideal fabrics for making labels. Damask labels are soft even after finishing and do not cause any irritation to the customer. Semi-damask is similar to damask in feel, but it costs lesser than damask.

According to the passage, which statement is NOT true（）

A．A garment label has been a “spokesman” for the certain brand.

B．Nowadays, labels have been one of the most influentially decisive factors in the customer’s purchasing performance.

C．A unique label adds to the beauty and attraction of the garment.

D．Labels are somewhat more important than the garments.
查看答案
单项选择题

80386微处理器的通用寄存器有( )个。

A．8

B．16

C．24

D．32
查看答案