【单选题】1 7.How can a radio operator determine the best frequency band to choose for a telex transmission to a shore station?
A.
By consulting propagation tables.
B.
If static interference is present, try lower bands first.
C.
Listen to shore station "free signals";choose the band with the strongest.
D.
During nighttime, choose highest frequencies. Choose Iower frequencies in the daytime.
【判断题】面对具体的工作任务时,大脑思维从“不可能”转变为“我怎样才能”时,就算养成了积极思维的好习惯。()
【判断题】货币需求量与利率的反向关系是通过每一条需求曲线都是向右下方倾斜来表示的。
【单选题】Fast Reading Read the text (P34) carefully and choose the best answer. 1. Honestly, many people want to form a band to ______ .
【简答题】Questions 11-14 Choose the correct letter, A, B or C. (注意,请采用大写字母填入正确选项,格式不当会导致误判) 11 The next at the hotel will be a A trade fair B wedding C party 12 The number of guests will be A less tha...
【简答题】Section C, Listening Comprehension, Band 6 Section C Directions: In this section, you will hear recordings of lectures or talks followed by some questions. The recordings will be played only once. Aft...
【多选题】如果实际货币余额的供给是固定的,实际货币余额的需求时(M/P)d= kY – hr, k和h均大于0,以下结论正确的是:(多选)
D.
根据上述条件得到的(r, Y)组合在r-Y平面上将是一条向右上方倾斜的曲线,这条曲线就是LM曲线