根据测量方法的不同，常用的硬度指标有()

A.布氏硬度

B.洛氏硬度

C.维氏硬度

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！

一名妇女，月经周期为32天，则其排卵大概在月经周期的

A、第14天

B、第15天

C、第16天

D、第17天

E、第18天

It can be inferred from Paragraph 4 that______.

A．golf and photography skills don"t fit children

B．there must be a tournament for the skill you teach

C．getting ready to share is the basis of helping children

D．traditional sports are neglected by the children now

与B7结合抑制T细胞活化的是

A、CD2

B、CD40L

C、ICOS

D、CTIA-4

E、CD28

Which of the following differences between executive coaching and traditional management training is NOT mentioned in the passage？

A．The time extent.

B．The object.

C．The content.

D．The expense.

Which of the following can best serve as the title of the passage？

A．A Possible Approach to Checking Heart Disease

B．The Risk of Heart Disease

C．The Relation Between Weight and Blood Pressure

D．How to Improve Your Heart Health