Author Question: When the telescope is introduced into the body, the temperature difference creates _______ on the ... (Read 17 times)

roselinechinyere27m · **on:** Jul 18, 2018

When the telescope is introduced into the body, the temperature difference creates _______ on the telescope lens.

A. clearness C. cracks
B. crystals D. fogging

Question 2

To prevent damage to a telescope, you should never carry or hold it ________________.

A. without a container C. by the head
B. with one hand D. by the shaft