differential-interference microscope（微分干涉显微镜）

[名词解释] 微分反应性 differential reactivity

[名词解释] 干扰（interference）

[单选题]__________[A] spread [B] interference [C] exclusion [D] influence

[单选题]The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.A．determine the need for filter cleaningB．measure any change in oil viscosityC．prevent damage to the filterD．determine the need for batch fil

[单选题]An increased pressure differential between the inlet and outlet of a strainer usually indicates the strainer is （）A . holedB . fouledC . cleanD . dry

[单选题]Increasing differential pressure of an oil filter indicates that （）A . it is dirtyB . it is leakyC . it has been renewedD . all the above

[名词解释] differential inhibition（分化抑制）

[名词解释] differential centrifugation （差速离心）

[单选题]Interference Margin是用来对抗（）A . 外部干扰B . Propagation shadowingC . very lower frequency reuseD . Multipath effectio

[名词解释] 差分备份（Differential Backup）