HLA检测用于法医的个体识别的原因是（） A.HLA复合体的检测方法简单 B.HLA

冠状动脉粥样硬化临床多见（）

A.45岁以上中、老年人

B.40岁以上中、老年人

C.50岁以上老年人

D.60岁以上老年人

E.55岁以上老年人

中国特色社会主义的本质属性是（）。

A.社会和谐

B.共同理想

C.社会公德

D.爱国主义

组合吊车梁腹板设置加劲肋时，下列何项是正确的说明理由。
①直接承受动力荷载的吊车梁，不应考虑腹板屈服后强度，并应按规范规定设置加劲肋；
②轻、中级工作制吊车梁计算腹板稳定时，吊车轮压设计值乘以折减系数0.85；
③吊车梁的中间横向加劲肋不应单侧设置；
④吊车梁横向加劲肋的宽度应不小于h₀/30+40(mm)，且不宜小于90mm。

A．①③
B．①②③
C．①④
D．②④

To get my traveler’s cheques I had to ______ such a special cheque to the bank for the total amount.

A. make for
B. make out
C. make up
D. make over

Frame Relay is simplified form of (66) , similar in principle to (67) , in which synchronous, frames of data are routed to different destinations depending on header information.

Packets are routed throught one or more Virtual Circuits known as (68) . Most Virtual Circuits are (69) , which means that the network provider sets up all DLCI connections at subscription time. (70) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

69（）

A．Permanent Circuits

B．Permanent Virtual Circuits

C．Switched Virtual Circuits

D．Switching Circuits