A.上限
B.下限
C.中间值
D.由编制人结合工程实际确定
A. are, It‘s B. is, It’s C. are, They are D. is, they are
A. when B. which C. during which D. on which
A. which B. where C. that D. a bout which
A. sock B. ones C.one D. that
A. Canadian, German B. Canadians, Germen
C. Canadian, Germany D. Canadians, Germans.
A. where B.on which C. under with D. which
A. which B. who C.that D. /
A. so diffcult a work B. such a diffcult work
C. so diffcult work D. such diffcult work
A. Since B.Even if C. Now that D.Even that
A. where B. which C. whatever D. whenever
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