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【单选题】
下列叙述正确的是A.
1 mol H 2 O的质量为18g/mol
B.
CO 2 的摩尔质量为44g
C.
3.01×10 23 个SO 2 分子的质量为32g
D.
标准状况下,1 mol任何物质体积均为22.4L
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【单选题】______ much of their land is poor and only ten percent of the land can be cultivated, over ninety percent of the population are agricultural workers.
A.
Except
B.
Although
C.
Because
D.
So far as
【单选题】Only ten to twenty percent of cold viruses are transmitted by carriers, who, sneezing and coughing, ______ the viruses into the air.
A.
spray
B.
sprinkle
C.
spread
D.
sprout
【简答题】寻址方式有指令的寻址方式方式和__________的寻址方式两种。
【单选题】Only ten to twenty percent of cold viruses are transmitted by carders, who, sneezing and coughing, ______the viruses into the air.
A.
spray
B.
sprinkle
C.
spread
D.
sprout
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