地毯按材质分为（）地毯、（）地毯、（）地毯和（）地毯。
压缩机止推轴承温度除同转子轴向推力大小有关外，同下列因素有关的有（）。
A. 润滑油总管压力
B. 润滑油温度
C. 润滑油流量
D. 瓦块表面光洁度
灰名单：由于卡片（）后，未完成一次完整的卡支付交易而产生的非法列表清单。
A. 售前交易
B. 预授权灰锁
C. 预授权解灰
D. 灰交易
The Lightweight Access Point Protocol （LWAPP） is in use within the Company wireless network. Which two statements correctly describe features of this protocol？ （）
A. Control traffic between an access point and a controller is encrypted within LWAP
B. Data traffic between an access point and a controller is encrypted within LWAP
C. Layer 3 mode packets are transmitted in TCP frames.
Data traffic between an access point and a controller is encapsulated within LWAP
E. VLAN tagging and QoS markings are applied at the access point.
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