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49 （单项选择题）               

A.Thompson was shocked and devastated.

B.Another trial was held.

C.I cannot begin to imagine what would have happened had my mistaken identification occurred in a capital case.

D.During the attack, she made an effort to memorize every detail of his face , looking for scars , tattoos (纹身) or other identifying marks.Jennifer

E.Many criminals are sent to prison on the basis of accurate testimony by eyewitnesses.

F.Jennifer Thompson decided to meet Cotton and apologize to him personally.

下列选项中不属于互联网络常用的服务是（）。

A.Telnet

B.WWW

C.电子商务

D.交流平台

钢梁在横向荷载作用下会丧失整体稳定，问横向荷载的临界值与（）有关。

A.荷载沿梁高的作用位置

B.钢材物理性能

C.荷载大小

哪种状态的计划订单不能参与粗能力计算（）

A.计划

B.审核

C.关闭

D.上选项都不正确

与人保持什么距离会有安全感（）。

A.视线能够看到一个完完整整的人

B.视线能够看到一个人的上半身

C.视线能够看到一个人的下半身

D.以上都不正确