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问题 单项选择题

工程项目必须通过启动（竣工）验收并经质量监督机构检查许可，由启动验收委员会确认具备（）后才能启动投运。

A.验收条件

B.试运条件

C.投产条件

D.竣工条件

答案

参考答案：C

问答题 简答题

已知投入原料2000吨，生产正品板1800吨，冶炼退废2吨，协议板3吨，求成材率是多少？
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问答题

(A) 条件(1)充分，但条件(2)不充分．
(B) 条件(2)充分，但条件(1)不充分．
(C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
(D) 条件(1)充分，条件(2)也充分．
(E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

One hundred cars on a particular lot were available with a compact disc player, a car phone, or both. How many cars had only a car phone
(1) The number of cars with compact dise players was twice the number of cars with both a compact dise player and a car phone.
(2) Thirty cars had both, which was half the number of cars with compact disc players.
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