降排水危及基坑及周边环境安全时，应采用的措施有( )。
A、截水
B、降水
C、回灌技术
D、砂沟、砂井回灌
E、减缓降水速度

活动单元地址显示在（　　　）内。 A. 工具栏 ...

单项选择题活动单元地址显示在（　　　）内。 A.
工具栏 B.
菜单栏 C.
公式栏 D.
状态栏

喷射混凝土层直接粘贴岩面，形成风化和止水地保护层，并阻止理裂隙中充填物流失

判断题喷射混凝土层直接粘贴岩面，形成风化和止水地保护层，并阻止理裂隙中充填物流失

As a reference electrode in the potentiometry, its elec...

单项选择题 As a reference electrode in the potentiometry, its electrode potential ( )
A、does not change with the concentration of measured ions
B、
is proportional to the measured ion
C、
is proportional to the logarithm of the concentration of the measured ion
D、
conforms to the Nernst equation with the concentration of the measured io