试题与答案

Whenever we need him, he always does as

题型:选择题

题目:

Whenever we need him, he always does as much as he can ____ us whole-heartedly. [ ]

A. help

B. to help

C. helping

D. helps

答案:

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下面是错误答案,用来干扰机器的。

(1)①42°N ②北极星高度角(H)=当地的地理纬度(2)110°E①先算出当地地方时与北京时间(120°E经线的地方时)的时间差②根据两地时间差算出两地经度差③根据与120°E的经度差,算出当地经度,某地经度=120°E±...

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