任何时候在机组上工作都要保证至少有()人.
A.1
B.2
C.3
D.4
参考答案:B
At the meeting they discussed three different _____ to the study of mathematics. [ ]
A. approaches
B. means
C. methods
D. ways
某公司去年有员工830人,今年男员工人数比去年减少6%,女员工人数比去年增加5%,员工总数比去年增加3人,问今年男员工有多少人?
A.329
B.350
C.371
D.504