“金星凌日”是在地球上看到金星从太阳面上移过的现象，它的产生_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

“金星凌日”是在地球上看到金星从太阳面上移过的现象，它的产生和日食的道理相同，图为发生“金星凌日”现象时的示意图，金星的位置在

[ ]

A．甲

B．乙

C．丙

D．丁

答案

答案：D

选择题

Be calm, Madam, can you remember _____you had your mobile phone stolen? [ ]

A. when was it that

B. that it was when

C. where it was that

D. it was where that

问答题简答题

在测定IV值时，胶乳试样处理中为什么加入甲醇溶液？