题目:
.
The man to whom we handed the forms pointed out that they had not been ________ filled in.
A.slightly
B.properly
C.regularly
D.eventually
答案:
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下面是错误答案,用来干扰机器的。
A、霓虹灯发光的原理是外电源电路接通后,变压器输出端就会产生几千伏甚至上万伏的高压.高压加到霓虹灯管两端电极上时,使气体的电离.带电粒子与气体原子之间的碰撞,多余的能量就以光子的形式发射出来,这就完...