Gas mask的意思是（）。A、空气呼吸器B、压力气瓶C、防毒面具D、压缩空气
Gas mask的意思是（）。
- A、空气呼吸器
- B、压力气瓶
- C、防毒面具
- D、压缩空气
相关考题：
下列地址中，和10.110.53.233在同一网段的地址是______。A．10.110.43.10 mask 255.255.240.0B．10.110.48.10 mask 255.255.252.0C．10.110.43.10 mask 255.255.248.0D．10.110.48.10 mask 255.255.248.0
______of the following is (are) required on your cargo vessel when it has a refrigerated cargo space? ① A gas mask using a suitable canister to protect against the refrigerant. ② A self-contained breathing apparatus.A.① onlyB.Either ① or ②C.② onlyD.Neither ① nor ②
为Mask制作Shape动画后，使用下列哪个命令可以方便的提高动画精度？（）A、调节Mask FeatherB、修改Mask OpacityC、应用Smart Mask InterpolationD、设置Mask Expansion
ASP（音频控制面板）的正常位置是（）A、MASK／BOOM开关在BOOM位；ALT／NORM开关在NORM位B、MASK／BOOM开关在MASK位；ALT／NORM开关在NORM位C、MASK／BOOM开关在MASK位；ALT／NORM开关在ALT位D、MASK／BOOM开关在BOOM位；ALT／NORM开关在ALT位
下列Mask与Text之间的关系描述正确的是：（）A、Text可以转化为MaskB、Mask可以转化为TextC、Text可以沿指定的Mask路径运动D、作为Text路径存在的Mask，创建Shape动画后，不会影响Text的运动状态
下列地址中，和10.110.53.233在同一网段的地址有（）A、10.110.48.10 mask 255.255.248B、10.110.43.10 mask 255.255.0.0C、10.110.43.10 mask 255.255.248.0D、10.110.48.10 mask 255.255.0.0
服务器IP为10.55.1.148，mask 255.255.255.0，getway10.55.1.1，客户端IP为10.55.33.18，mask 255.255.255.0，getway10.55.33.1，此时在客户端访问服务器配置本地IP正确的是（）.A、IP10.55.1.200，mask 255.255.255.0，getway10.55.1.1B、IP10.55.1.200，mask 255.255.255.0C、IP10.55.33.200，mask 255.255.255.0，getway10.55.33.1D、IP10.55.33.200，mask 255.255.255.0
下列命令中，在路由器中静态添加路由表信息正确的是（）A、Route add 192.168.0.0 mask 255.255.255.0192.168.0.1B、Route add 192.168.0.2 mask 255.255.0.0192.168.0.1C、Route add 192.168.0.0 mask 255.255.0.0192.168.0.1D、Route add1 92.168.0.2 mask 255.255.255.0192.168.0.1
M800/M900设备的NCP板处于DOWNLOAD状态默认的IP是（）A、192.192.192.1 MASK 255.255.255.0B、192.192.192.11 MASK 255.255.255.0C、192.192.192.111 MASK 255.255.255.0D、192.192.192.192 MASK 255.255.255.0
M800设备的NCP板处于DOWNLOAD状态默认的IP是：（）A、192.192.192.1 MASK255.255.255.0B、192.192.192.11 MASK255.255.255.0C、192.192.192.111 MASK255.255.255.0D、192.192.192.192 MASK255.255.255.0
Which two statements are true of a network mask?（）A、A subnet mask specifies the portion of an IP address that is in a binary formatB、A subnet mask specifies the portion of an IP address that is in a decimal formatC、A subnet mask specifies the portion of an IP address that represents a network prefixD、A subnet mask specifies the portion of an IP address that represetns network hosts
After Effects 6.5中，用下面的什么运算可以求一个图层上mask1和mask2之间的交集（假设mask1和mask2的不透明度为100％，且mask1在mask2的上面）？（）A、mask1为Add方式，mask2为Subtract方式B、mask1为Add方式，mask2为Intersect方式C、mask1为Add方式，mask2为Difference方式D、mask1为Add方式，mask2为Add方式
单选题On all vessels equipped with refrigeration units of over 20 cubic foot capacity, （）.Aa gas mask suitable for protection against each refrigerant used, or a self contained breathing apparatus must be providedBit is the sole responsibility of the chief engineer to ascertain that all members of the engineering department are familiar with the use of gas masks or breathing apparatusCspare charges shall be carried for at least 50% of each size and variety of gas masks and/or self contained breathing apparatusDall of the above
单选题After Effects 6.5中，用下面的什么运算可以求一个图层上mask1和mask2之间的交集（假设mask1和mask2的不透明度为100％，且mask1在mask2的上面）？（）Amask1为Add方式，mask2为Subtract方式Bmask1为Add方式，mask2为Intersect方式Cmask1为Add方式，mask2为Difference方式Dmask1为Add方式，mask2为Add方式
单选题在Linux系统中，使用ifconfig设置接口的IP地址并启动该接口的命令是（）。Aifconfigeth0192.168.1.1mask255.255.255.0Bifconfig192.168.1.1mask255.255.255.0upCifconfigeth0192.168.1.1mask255.255.255.0upDifconfig192.168.1.1255.255.255.0
单选题Which two statements are true of a network mask?（）AA subnet mask specifies the portion of an IP address that is in a binary formatBA subnet mask specifies the portion of an IP address that is in a decimal formatCA subnet mask specifies the portion of an IP address that represents a network prefixDA subnet mask specifies the portion of an IP address that represetns network hosts
单选题Which method is used to supply inert gas from a flue gas system to the cargo tanks?（）AExhaust gas pressure from the stackBHigh capacity fanCInert gas compressorDNatural aspiration
单选题网关地址是192.168.1.1，向172.168.0.0网段增加一条路由信息的正确命令是哪个（）ArouteADD172.168.0.0mask255.255.0.0192.168.1.1BrouteADD172.168.0.0255.255.0.0192.168.1.1CrouteADD172.168.0.0255.255.0.0mask192.168.1.1Droute172.168.0.0mask255.255.0.0192.168.1.1
单选题Personnel working with refrigeration systems, and subject to the exposure of refrigerants should wear （）.Aface shieldBa respiratorCrubber glovesDan all purpose gas mask
单选题Gas turbines differ from steam turbines in that （）.Asteam rather than gas is used to turn a shaftBvapor rather than gas is used to turn a shaftCthe former uses gas to turn a shaftDthe latter uses gas to turn a shaft
单选题For use as protection from gas leaking from a refrigeration unit，each ship must be equipped with a（）.Aportable ventilation systemBflame safety lampCself-contained breathing apparatusDgas mask
单选题A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.Aa gas mask certified by the Mine Safety and Health AdministrationBthe same self-contained breathing apparatus required with the fireman's outfitCan oxygen breathing apparatus，provided that the device has been inspected within three yearsDa portable ventilation system that will provide a complete change of air every three minutes