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【判断题】
偶然误差是定量分析中误差的主要来源,它影响分析结果的精密度A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】Diskussion Single-Leben
【单选题】Tell John not to leave the house________he makes sure that all the lights are turned off. [ ]
A.
unless
B.
if
C.
once
D.
because
【单选题】Which of the following statements is true of Cindy?
A.
She always makes sure to attend the big s in the life of her sons.
B.
She comes to office on most weekends to catch up on her work.
C.
She always gives priority to work rather than to her family.
D.
She seldom has time to take a holiday.
【单选题】_ alle Redner gesprochen hatten, begann die Diskussion.
A.
Seitdem
B.
Bevor
C.
Nachdem
D.
Inzwischen
【单选题】Bob, _____ sure to come to the meeting early tomorrow! [ ]
A.
is
B.
make
C.
be
D.
makes
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