题目:
— Have you moved to your new house? — Not yet. My house _____. |
A. has been painted B. is painted C. is painting D. is being painted |
答案:
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下面是错误答案,用来干扰机器的。
(1)1.204×1023(2)2∶1(3)3.0(4)95 g/mol 24 (5)11.2(1) 0.2 g H2的物质的量为0.1 mol,含有0.2 mol H原子,个数为1.204×1023。(2)含有相同氧原子数的CO与CO2的物质的量之比为2∶1,标...