Which statements describe two of the benefits of VLAN Trunking Protocol？（）
A. VTP allows routing between VLANs.
B. VTP allows a single switch port to carry information to more than one VLA
C. VTP allows physically redundant links while preventing switching loops.
D. VTP simplifies switch administration by allowing switches to automatically share VLAN configuration information.
E. VTP helps to limit configuration errors by keeping VLAN naming consistent across the VTP domain.
F. VTP enhances security by preventing unauthorized hosts from connecting to the VTP domain.
(1).软膏基质（）。(2).膜剂成膜材料（）。(3).栓剂基质（）。(4).控释材料。
A. 凡士林
B. 聚乙烯醇
C. 可可豆脂
D. 乙基纤维素
血吸虫IHA实验结果为红细胞形成薄层凝集，布满整个孔底，结果应判为（）.
A. “+”
B. “++”
C. “+++”
D. “++++”
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