单项选择题

用Mg将丙酮还原制备频哪醇时, 应选用哪个溶剂?

A．水
B．乙醇
C．异丙醇
D．苯

你可能感兴趣的试题

多项选择题

What are the advantages of travelling by air? ( )

A．The service on planes is much better and it’s more comfortable.
B．It is so much quicker and safer.
C．It saves time to enjoy sightseeing.
D．It is not as much expensive as other means of transportation.

单项选择题

根据发音规则，找出以下单词中划线部分发音不同的1个单词。 A.
time B.
tape C.
train D.
wave