pH对花色苷的热稳定性有很大的影响，在（）pH时稳定性较好。
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在那些情况下应对变压器特殊巡视检查，增加巡视检查次数？?
What are two characteristics of a switch that is configured as a VTP client?（）
A. if a switch that is configured to operate in client mode cannot access a VTP server,then the switch reverts to transparent mode.
B. The local vlan configuration is updated only when an update that has a higher configuration revision number is received.
C. Vtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.
D. When switches in vtp client mode are rebooted,they send a vtp advertisement request to the vtp servers.
E. Vtp client is the default vtp mode
F. On switches that are configured to operate in client mode ,vlans can be created,deleted,or renamed locally
根据《建设工程监理规范》专业监理工程师应根据承包单位报送的隐蔽工程报验申请表和自检结果进行（）符合要求予以签认。
A. 书面检查
B. 抽检
C. 现场检查
D. 平行检查
一般种子可用50～55℃温汤浸（），对病毒有一定的治疗效果。
A. 5～10min
B. 10～15min
C. 15～20min
D. 20～25min
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