The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found().
A. on loran charts covering areas where sky waves are used
B. in the Radio Aids to Navigation,PUB 117
C. in the Loran-C Correction Tables
D. Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading
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推荐人应当是任职1年以上的期货公司现任董事长、监事会主席或者经理层人员。()
A. 正确
B. 错误
铁素体是含碳量很低的铁,是由铁和碳(或其它元素)形成的体心立方晶格的()。
A. 共析体
B. 化合物
C. 固熔体