什么是开环功率控制和闭环功率控制?其作用有何不同?
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垫片可分为软质垫片、硬质垫片、液体密封垫片和填料四大类。
A. 正确
B. 错误
新疆自古以来就是中国的领土,清朝政府加强对新疆地区管理的措施是()
A. 设置西域都护
B. 设置宣政院
C. 设置驻藏大臣
D. 设置伊犁将军
签署《大连银行银企对账服务协议》时,可供客户选择的对账方式包括()
A. 委托邮寄
B. 网上银行
C. 柜台对账
D. 短信对账
Any extra expense incurred in place of another expense which would have been allowable as general average shall()general average and so allowed without regard to the saving if any,to other interests,but only up to the amount of the general average expense avoided.
A. deem to be
B. deem being
C. be deemed to be
D. be deemed being