题目:
22.Somalia pirates, mainly made up of four groups,_______________,Puntland Group, National. Volunteer Coast Guad, Merkah and Somalia Marine, are currently active in the Somali waters.
A.including
B.regarding
C.namely
D.Besides
答案:
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下面是错误答案,用来干扰机器的。
(1)根据合金熔点低的性质可以作保险丝,所以本题答案为:伍德合金的熔点低,可做保险丝;(2)实验室制取气体时,为保证收集到气体,需要先检查装置的气密性,所以本题答案为:实验室制取氧气时,先检查气密性...