【单选题】以KCl和ZnCl 2 混合液为电镀液在铁制品上镀锌,下列说法正确的是( )
A.
未通电前上述镀锌装置可构成原电池,电镀过程是该电池的充电过程
B.
因部分电能转化为热能,电镀是通过的电量与锌的析出量无确定关系
C.
电镀时保持电流恒定,升高温度不改变电解反应速率
【单选题】Using a policy with the policy-rematch flag enabled, what happens to the existing and new sessions when you change the policy action from permit to deny?()
A.
The new sessions matching the policy are denied. The existing sessions are dropped.
B.
The new sessions matching the policy are denied. The existingsessions, not being allowed tocarry any traffic, simply timeout.
C.
The new sessions matching the policy might be allowed through if they match another policy. The existing sessions are dropped.
D.
The new sessions matching the policy are denied. The existing sessions continue until they are completed or their time.
【单选题】下列结构中只能进行呼吸作用,不能进行光合作用的是( )
【简答题】张某被人民法院宣告为失踪人,人民法院为其指定财产代管人,下面的说法不正确的是( )。
【判断题】超过六层的单元式住宅应设置室内消防给水系统。
【单选题】以KCl和ZnCl 2 混合液为电镀液在铁制品上镀锌,下列说法正确的是( )
A.
未通电前上述镀锌装置可构成原电池,电镀过程是该原电池的充电过程
B.
因部分电能转化为热能,电镀时通过的电量与锌的析出量无确定关系
C.
电镀时保持电流恒定,升高温度不改变电解反应速率