下列选项中，（）的建立是个复杂的过程，涉及社会、经济、产业、文化等众多因素，房地产经

触发器的门槛电压又称为（），作用相当于电磁式继电器中产生制动力矩的弹簧。

A.基准电压

B.基极电压

C.标准电压

D.动作电压

关于五味，下列哪是正确的

A．药味可以与滋味相同，也可以与滋味相异

B．是药物作用规律的高度概括

C．是所有药物真实滋味的具体表示

D．指药物因功效不同而具辛甘酸苦咸等味

E．药味既是药物的滋味，又超出药物的滋味

LSCA的先露部指示点为（）

A.枕骨

B.颏骨

C.骶骨

D.肩岬骨

E.臀部

翻译：抑本其成败之迹，而皆自于人欤？

In (66) the strength of the carrier signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to al name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.

A．ASK

B．PSK

C．FSK

D．FDM