题目内容

John had been working hard and ______.

A. so had his brother
B. so his brother had
C. so was his brother
D. so his brother did

查看答案

搜索结果不匹配？点我反馈

更多问题

The house ______ will be our new laboratory.

A. building
B. being built
C. to build
D. having built

For it to end in a positive manner a negotiation must be a win-win situation for both parties.（）

A. 为了以积极的方式结束谈判，结果应该是双赢的局面。
B. 作为对谈判的肯定，其结果必须是双赢的局面。
C. 谈判积极的结果应该是双赢的局面。
D. 因为双方肯定的态度，谈判的结果没有输赢。

向蓄电池灌注电解液时，电解液的温度不宜高于( )。

A. 20℃
B. 25℃
C. 30℃
D. 35℃

由于自备发电机组均为应急所用，因此首先要选有自启动装置的机组，一旦城市电网中断，应在15s内启动且供电。机组在市电停后延时( )后开始启动发电机，启动时间约10s，发电机输出主开关合闸供电。

A. 1s
B. 2s
C. 3s
D. 4s