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【单选题】
联轴器和离合器的主要作用是( )。A.
联接两轴，使其一同旋转并传递转矩
B.
补偿两轴的综合位移
C.
防止机器发生过载。
D.
分离两轴
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举一反三
【单选题】执行以下程序后输出的是 ()。 Private Sub Command1_Click() Ch$="AABCDEFGH" Print Mid(Right(ch$, 6), Len(Left(ch$, 4)), 2) End Sub
A.
CDEFGH
B.
ABCD
C.
FG
D.
AB
【简答题】（ 14 ）执行以下程序后输出的是 Private Sub Command1_Click() Ch$= ” AABCDEFGH ” Print Mid(Righ(ch$,6),Len(left(ch$,4)),2) End Sub A)CDEFGH B)ABCD C)FG D)AB
【单选题】Which of the following led to the slowdown in American educational advances in the last three decades of the 20th century?
A.
No easy access to financial aid.
B.
veremphasis on preschool programs.
C.
A dramatic fall college enrollment rates.
D.
A rise in the number of poor school districts.
【单选题】执行以下程序后输出的是 Private Sub Command1_Click() Ch$=“AABCDEFGH” Print Mid(Right(ch$,6),Len(left(ch$,4)),2) End Sub
A.
CDEFGH
B.
ABCD
C.
FG
D.
AB
【单选题】执行以下程序后输出的是。 Private Sub Commandl_Click ch$ = 'ABCDEFGH': Print Mid(Right(ch$, 6), Len(Left(ch$, 4)), 2) End Sub
A.
CDEFGH
B.
ABCD
C.
FG
D.
AB
【单选题】The passage supports which of the following statements about employees buying shares in their own companies?
A.
At three different companies, approximately nine out of ten of the workers were eligible to buy shares in their companies.
B.
Approximately 90% of the ellgible workers at three different companies chose o buy shares in their companies.
C.
The opportunity to buy shares was discouraged by at least some labor unions.
D.
Companies that demonstrated the highest productivity were the first to allow their employees the opportunity to buy shares.
E.
Eligibility to buy shares was contingent on employees’ agreeing to increased work loads.
【多选题】Which thoery is know as one of the three indispensable theories upon which the science of biology is built in 19th century?
A.
The theory of evolution
B.
The cell theory
C.
The theory of equilibrium thermodynamics
D.
Mendal's law of inheritance
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