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地面辐射与地面吸收的大气逆辐射之差称为有效辐射。读图并结合所学知识，回答1~2题。 黄河流域多年平均年有效辐射总量等值线图（单位：MJ/m2） 1、关于甲、乙、丙三地多年平均年有效辐射总量的空间分布，下列叙述正确的是 [ ] A、由甲地向乙地急剧增加 B、由乙地向丙地急剧增加 C、由甲地向丙地逐渐减少 D、由丙地向乙地逐渐减少 2、关于地面辐射和大气逆辐射，下列叙述不正确的是 [ ] A、地面辐射与下垫面性质有关 B、地面温度越高，地面辐射越弱 C、空气温度越低，大气逆辐射越弱 D、空气湿度大、云量多，大气逆辐射强
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【单选题】The corrections are then communicated ________ to the navigators, where they are combined with the satellite signals received by the navigators, thereby improving their navigation or positioning.
A.
later
B.
two minutes earlier
C.
24 hours later
D.
in real-time
【判断题】When errors in the account book occur because of wrong titles recorded in the vouchers, orbecause of wrong figures more than their entries in the vouchers, corrections are made by an extra record.
A.
正确
B.
错误
【单选题】The corrections are then communicated _______ to the navigators, where they are combined with the satelliate signals received by the navigators, thereby improving their navigation or positioning.
A.
later
B.
two minutes earlier
C.
24 hours later
D.
in real-time
【简答题】Corrections to Sailing Directions are given in Section IV. Those in force at the end of the year are reprinted in the Annual Summary of Notices to Mariners. A list of corrections in force is published...
【简答题】从零件图开始,到获得数控机床所需控制( )的全过程称为程序编制,程序编制的方法有( )和( )。
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