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【简答题】
用重量法测定试样中的镁的含量，MgNH 4 PO 4 为沉淀形式，Mg 2 P 2 O 7 为称量形式。测定叫w Mg 时的换算因子是______，测定w MgO 时的换算因子是______。
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【简答题】A．He thinks David is not reliable. B．He's willing to trust David. C．He has told his doubts to David. D．He thinks David will benefit from this experience.
【简答题】变电所内，高低压配电设备及裸母线的正上方不应安装灯具，灯具与裸母线的水平净距不应小于（）m。
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【单选题】As reliable parents, they never ______ to give their son what he is promised.
A.
expect
B.
intend
C.
manage
D.
fail
【单选题】—John is very ______ . —if he promises to do something he’ll do it.
A.
independent
B.
confident
C.
reliable
D.
flexible
【单选题】He had the 'right' accent, ______ middle - class parents in court, reliable witnesses, and he could obviously afford a very good solicitor.
A.
respectable
B.
respectful
C.
respective
D.
respecting
【单选题】John is very ——if he promises to do something he’ll do it .
A.
humour
B.
cautious
C.
modest
D.
reliable
【单选题】John is very _____---if he promises to do something he’ll do it.
A.
incredible
B.
confidential
C.
reliable
D.
flexible
【简答题】“个人形象礼仪"主要包含了仪态礼仪、 礼仪和仪容礼仪。
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