水肿的发生,主要是全身气化功能障碍的表现,是肺、脾、肾三脏相干为病,而导致水液泛滥肌肤。
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建筑业企业应尽快实施管理层和作业层“二层分离”,迅速提升管理水平,使工程施工专业化,劳务作业企业化。
A. 正确
B. 错误
劳动者被诊断患有职业病,但用人单位没有依法参加工伤社会保险的,则仍能享受医疗和生活保障。
A. 正确
B. 错误
Which two statements about the Wired Equivalent Privacy (WEP) encryption mechanism are true? ()
A. the two methods of authentication using the WEP encryption are open and shared key
B. the 802.11 standard defines WEP security using 128-bit keys
C. WEP can provide stronger authentication through the use of LEAP, PEAP, or EAP-FAST
D. WEP is a scalable encryption solution that uses static keys for authentication
E. WEP security provides only one-way authentication
F. WEPv2 offers improved encryption by replacing the RC4 encryption mechanism with the AES (symmetric block cipher) mechanism
只表示出物质化学成分中各氧化物之间的数量比关系,而不表示其结构特性的化学式,称为实验式。
A. 正确
B. 错误