锦屏二级水电站的说法正确的是（）。 A.位于雅砻江上 B.开发方式为引水式 C.辅助

对起重机进行载荷起升能力试验中静载试验时，试验负荷应为额定起升载荷的 ( )倍。

A．1

B．1.1

C．1.25

D．1.5

An internet is a combination of networks connected by (1).When a datagram goes from a source to a(2)，it will probably pass many (3)until it reaches the router attached to the destination network. A router receives a (4)from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5)is the optimum pathway?

空白（5）处应选择（）

A.pathways

B.routers

C.diagrams

D.calls

迟发反应包括（）。

A.H反射

B.F波

C.轴突波

D.眨眼反射

E.以上都是

工作表最多可有（）列。

A、65535

B、256

C、255

D、128

GB17930-2006车用汽油标准规定胶质不大于（）mg/100mL。

A、2

B、5

C、10

D、4