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【单选题】
制动员使用手制动机制动选闸时，要提前检查闸链、闸杆、闸盘、闸台等是否完好。按照（），选重不选空，选高不选低，选大不选小，选标型不选杂型，选双不选单的要求进行选闸，使用折叠式制动机，应事先做好准备。A.
选新不选旧
B.
选多不选少
C.
选后不选前
D.
选前不选后
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When load balancing traffic between two web servers， which of the following technologies provides the LOWEST cost solution？（）
A.
Active/passive cluster
B.
Active/active cluster
C.
Log shipping
D.
DNS round robin
【单选题】革兰阳性细菌下列哪项是错误
A.
细胞壁主要成分是肽聚糖
B.
肽聚糖层外有脂蛋白外膜及脂多糖
C.
对青霉素敏感
D.
产芽胞的细菌都是革兰氏阳性菌
E.
有些革兰氏阳性细菌能产生外毒素
【简答题】若区域【图片】为【图片】则【图片】___________.
【单选题】TCP load distribution uses which distribution algorithm to spread the load among OP addresses in the pool?
A.
Least number of connections
B.
Amount of traffic going to each IP address in the pool
C.
Round-robin
D.
The weight is determined by the load on each server on the back end
【单选题】It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich...
A.
single layer of firewalling
B.
multiple layers of firewalling
C.
firewall connections in either an active or standby state
D.
an architecture in which all traffic between firewalls goes through application-specific servers
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