皮皮学，免费搜题
登录
搜题
【单选题】
[7-84]By filling the ullage space in a cargo tank with an inert gas, the oxygen content can be reduced to a level at which the atmospheA.
crude oil washing.
B.
inerting a tank.
C.
gas freeing.
D.
cargo loading.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】已知一正弦交流电流最大值是50A,频率为50Hz,初相位为120 0 ,则其解析式为 。
【简答题】We are not short of raw materials at the moment, but we need reliable ( ) (equip).
【单选题】we are not short of raw materials at the moment, but we need reliabe _______
A.
equipment
B.
equip
C.
equipped
D.
equiping
【单选题】We are not short of raw materials at the moment, but we need reliable _______.
A.
equip
B.
equiped
C.
equipment
D.
equiping
【简答题】已知一正弦交流电流最大值是50A，频率为50Hz，初相位为120°，则其解析式为（）A。
【简答题】已知一正弦交流电流 ,则其最大值为()A、有效值为()A、角频率为()、频率为() H Z 、周期为()s 。