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问题 单项选择题

某车间行驶多台重级工作值吊车。当进行疲劳计算时，吊车荷载应考虑下列哪一项？（）

A.两台相邻最大吊车标准值

B.一台最大吊车设计值乘以动力系数

C.一台最大吊车设计值

D.一台最大吊车标准值

答案

参考答案：D

单项选择题

（86～88题共用题干）　　　　马，7岁，2008年7月由于过度使役而突然发病。临床表现明显的呼吸困难，流泡沫状鼻液，黏膜发绀。体温40.5℃，呼吸85次/分钟，脉搏97次/分钟。肺部听诊湿啰音。X线影像显示肺野密度增加，肺门血管纹理显著。

最可能的诊断是　　

A．胸膜炎

B．喘鸣症

C．支气管炎

D．肺泡气肿

E．肺流血与肺水肿
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单项选择题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) , it must describe the traffic to be offered and the service expected.

5（）

A．path

B．rout

C．circuit

D．way
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