题目内容

工程中研究不同问题时,可取不同的力学模型以简化计算。

A. 对
B. 错

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1.Shehadnosoonersatdown______someonestartedknockingatthedoor

A. when
B. after
C. than
D. while

2.Oldercomputersarenotabletorunthesenewprograms,______causesthemtoperformmoreslowly.

A. that
B. which
C. what
D. where

3.Acompany______staffmembershaveagoodunderstandingofsuchsoftwarewillbeabletouseitmoreefficiently.

A. whose
B. that
C. who
D. whom

4.Afterthetalk,bothsidesagrcedtodraw______aformalagreement.

A. for
B. with
C. up
D. to