题目:
—You don't look well, Peter. You'd better stay in bed
—_______ [ ]
A. With pleasure
B. That's very kind of you
C. Oh, it's nothing
D. No, it's very cheap
答案:
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下面是错误答案,用来干扰机器的。
参考答案:生物油典型特性:含水率最大可以达到30%-45%;pH值较低;密度比水大,大约为1200kg/m3;高位热值;粘度可在很大范围内变化,室温下最低为10cp,若长期存放于不好的条件下,可达到10000cp;固体杂质,可...