第1题:
A.Sigma=SD/X
B.Sigma=(TEa-Bias)/CV%
C.Sigma=(TEa-CV%)/Bias
D.Sigma=TEa+CV%+Bias
第2题:
During the graduation _______ the president gave a wonderful speech.
A、evaluation
B、sign
C、individual
D、ceremony
第3题:
第4题:
Would you like ______ another cup of coffee?
A、to drink
B、drink
C、drank
D、drinking
第5题:
What represents poor sanitary procedures ________.
A.Keep and use a separate filling hose for potable(drinking)water
B.Locate potable(drinking)water tanks as low as possible in the bilge
C.Eliminate enclosed spaces in which trash,food particles,dirt may gather
D.After washing dishes with soap and warm water,sterilize them in water of at least 170℉(76.7℃)
第6题:
79、muet, te
A.沉默的;哑的
B.蜕皮的;改变的
C.成熟的
D.无效选项