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【单选题】
珠光体耐热钢是以铬钼为基础的具有高温强度和抗氧化性的( )。A.
优质碳素结构钢
B.
高合金钢
C.
中合金钢
D.
低合金钢
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反馈参考答案：
举一反三
【单选题】下列四个试剂,不跟CH 3 CH 2 COCH 2 CH 3 反应的是:
A.
(A) RMgX
B.
(B) NaHSO 3 饱和水溶液
C.
(C) PCl 5
D.
(D) LiAlH 4
【简答题】While still in its early stages, welfare reform has already been judged a great success in many states ?a at least in getting people off welfare. It's estimated that more than 2 million people have le...
【简答题】是现代工业生产的主要能源和动力。
【单选题】Economy, one of the principles of success in the details of housekeeping, consists not alone 【C1】______ making advantageous use of fresh material, but in carefully【C2】______and utilizing the 'left-ove...
A.
of
B.
with
C.
by
D.
in
【简答题】In order to be a success in the American business world, you must “get along” with people. You must learn to conduct yourself in such a way _1_ you earn the affection and respect of others._2_ we have...
【单选题】国务院总理李克强指出,要更加重视技能人才培养,实施好职业技能提升行动,紧扣需求发展现代职业教育、办好技工院校,完善技术工人职业发展机制和政策,使更多社会需要的技能人才、大国工匠不断涌现。这是基于 1技能人才是国家兴旺发达的宝贵资源 2职业教育是实现劳动者平等就业的保证 3大国工匠在生产力发展中起主导作用 4职业技能提升是高质量发展的重要支撑
A.
①②
B.
①④
C.
②③
D.
③④
【简答题】Placebos do not always 1 . The success of this treatment seems to rest a lot 2 the relationship 3 the patient and the doctor. If the patient has a lot of 4 in the doctor and if the doctor really wants...
【单选题】当电源关闭后,下列关于存储器的说法中,正确的是______。
A.
存储在RAM中的数据不会丢失
B.
存储在ROM中的数据不会丢失
C.
存储在U盘中的数据会全部丢失
D.
存储在硬盘中的数据会丢失
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