网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
A hollow-cathode lamp is（）
- A、A broad-band light source
- B、A narrow-band light source
- C、A light detector
- D、Not a light source
参考答案
更多 “A hollow-cathode lamp is（）A、A broad-band light sourceB、A narrow-band light sourceC、A light detectorD、Not a light source” 相关考题
考题
I still remember the winter () we went to Harbin to see the ice－lamp.
A、whichB、whyC、whoseD、when
考题
Where could you monitor the correct instant for synchronizing without aid of synchroscope or synchronizing lamp?
A.Distribution boardB.Section boardC.Emergency switchboardD.Main switchboard
考题
What is the best instrument for establishing a safe working area before welding in a confined space?A.An oxygen indicatorB.A combustible gas indicatorC.A combination combustible gas and oxygen indicatorD.A flame safety lamp
考题
Thank you for your recent order. Although most of your items have ____ shipped, the Full-Spectrum Desk Lamp （model B07） is temporarily out of stock.A.ever
B.often
C.lastly
D.already
考题
关于OSN6800设备，下列说法不正确的（）A、LAMP1/LAMP2是子架间告警级联，向机柜指示灯输出告警信号B、COM口是子架间通信口C、ETH1/ETH2/ETH3口是主从子架间通信接口D、NM_ETH1/NM_ETH2是网管接口或网管级联口
考题
Which of the following items can be used as a discharge lamp？（）A、Halogen lampB、Light Emitting Diodes （LED）C、Fuser lampD、Cleaning roller
考题
Which of the following type of lamp is used for heating a fuser？（）A、XenonB、HalogenC、IncandescentD、Light Emitting Diode
考题
下列（）一组设备符合普通套房起居室的组合规则。A、lamp desk tapB、teatablE chair bedC、teatablE sofA lampD、lamp sofA tap
考题
单选题There are a lot of vessel in the vicinity. Please（）signal lamp at me for indentification.A
indicateB
direcC
correctD
light
考题
单选题On cargo and miscellaneous vessels what is NOT a required part of the fireman’s outfit?（）A
Self-contained breathing apparatus with a lifeline attachedB
Combustible gas indicatorC
Rigid helmet，boots，and glovesD
Flame safety lamp
考题
单选题A hollow-cathode lamp is（）A
A broad-band light sourceB
A narrow-band light sourceC
A light detectorD
Not a light source
考题
问答题Which lamp is the brightest? Lamp A is less brighter than Lamp B; Lamp B is brighter than Lamp C; Lamp C is as bright as Lamp D; Lamp B is brighter than Lamp D; Lamp D is brighter than Lamp A.
考题
单选题It was well known that Thomas Edison（）the electric lamp.A
inventedB
discoveredC
foundD
developed
考题
单选题Please light the pilot lamp.（）up and （） down. （）A
White；redB
Red； whiteC
Red； greenD
Green ；red
考题
单选题The passage implies that ______.A
the fever process is widespread because moderate fevers have benefitsB
the reduction of fevers can inhibit bacterial growthC
man can use sun lamp to raise lizards’ temperatureD
Crayfish injected with bacteria have a purpose for moving to hot areas
考题
单选题In which of the following sections of an MFP would a technician find a Xenon Lamp？（）A
The paper feed sectionB
The fuser sectionC
The scanner sectionD
The transfer section
热门标签
最新试卷