什么是剪力墙的加强部位？
参考答案：
在剪力墙底部的一定高度内，适当提高承载力和加强抗震构造措施。
在机组启动并网，锅炉转直流运行后，主汽温的调整以煤水比来控制中间点温度。
(1) In the strength of the carrier signal is varied to represent binary 1 or 0.
(2) is a system that can map a name to an address and conversely an address to an name.
(3) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol
(4) is an approach that enables an ATM Switch to behave like a LAN switch.
(5) is an guided media which is made of glass or plastic and transmits signals in the form of light.
1（）
A．ASK
B．PSK
C．FSK
D．FDM
