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【多选题】
关于水泥胶砂强度试件下列说法正确的是( )。A.
制作时环境温度20+2℃
B.
养护用水温度为20+1℃
C.
养护时试样放置无规定
D.
养护用水无规定
E.
养护期间试件之间或试体表面水深不得小于5mm
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【单选题】Integrity Meds gets $1 per prescription from Carepharm, which can cover all the costs except ______.
A.
wages
B.
electricity fees
C.
machine maintenance charges
D.
project costs
【单选题】Which of the following senices is excluded from Inmarsat-F services?
A.
4.8 kbps AMBE telephone.
B.
High speed
C.
Telex.
D.
E-mail.。
【单选题】Which of the following is true regarding international businesses?
A.
All MNEs are international businesses.
B.
Only firms that export products are international businesses.
C.
Only firms that invest abroad are international businesses.
D.
All international businesses are MNEs.
【单选题】57 Which of the following are types of status reports?
A.
document, variance, trend and exception
B.
cost, trend, schedule and acquisition
C.
cost, schedule, technical performance
D.
analysis, cost, performance and schedule
E.
All of the above.
【简答题】莫尔法中铬酸钾指示剂的作用原理是什么? K 2 CrO 4 指示剂的用量过多或过少对滴定有何影响?
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