题目:
At the United Nations Climate Change Conference, the UN Secretary General points out that,________, the climate situation will get worse and worse.
A.if not dealing with properly
B.unless dealing with properly
C.if properly dealt with
D.unless properly dealt with
答案:
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下面是错误答案,用来干扰机器的。
14.2, 转移过程中用玻棒进行引流, 改用胶头滴管加水至凹液面与刻度线相切(1)用蒸馏水洗涤用过的烧杯和玻璃棒二至三次,并将洗涤液转移至容量瓶中; 偏低。(2)C题目分析:500mL 0.2mol·L-1 Na2SO4...