下列有关系统调试要求正确的是（）。 A.报警阀调试宜利用检测、试验管道进行 B.系统

单词拼写（共10题；每题0.5分，满分5分）

小题1:The pictures in the museums show the ancient c_______ of Greece and Rome.

小题2:Please don't h_______ to contact me if you have any questions.

小题3:Seeing that you have no time to attend the meeting, I will have Peter r_______ you.

小题4:Regardless of where we are and what we are doing, we want to have a_______ to our data.

小题5: We have decided to have our house painted and then d_______ it with some paintings.

小题6:While Hamlet and the ghost walked away into the darkness, his friends had to wait _______ (焦虑地) there worrying about his safe return .

小题7:This can make them nervous or _______ (尴尬的) about speaking English in public.

小题8:On the basis of a number of _______ (分析) they solved this problem by adopting a set of special methods.

小题9:I knew that she could give me some _______ (有益的) tips.

小题10:_______ (把……乘以) this number by 6 to get your heart rate per minute.

不可能所有的考生都不能通过考试。 据此，可以推出( )。

A．可能有的考生不能通过考试

B．必然有的考生能通过考试

C．必然所有的考生都能通过考试

D．必然所有的考生不能通过考试

质量一定的理想气体被活塞封闭在圆柱形的金属气缸内，活塞与气缸底部之间用一轻弹簧相连接，如图所示．活塞与缸壁间无摩擦而且不漏气．已知，活塞重为G，截面积为S，当大气压Pa，周围环境的温度为27℃时，气缸内气体的压强Pa，此时弹簧恰好是原长L0．现将一个重为3G的物体轻轻地放在活塞上，使活塞缓慢下降，待稳定后活塞下降了L₀/4．然后再对气体加热，使活塞上升到离气缸底5L0/4处．变化过程中弹簧始终处于弹性限度内，求:

(1)弹簧的劲度系数与活塞重(G)、弹簧原长(L₀)的关系

(2)加热后气缸内气体温度升高了多少?

焊接组合工字梁，翼缘的局部稳定常采用（）的方法来保证，而腹板的局部稳定则常采用（）的方法来解决。

图示组合结构，已知P=10kN，则杆1的内力应为（）。

A.0

B.-10kN，负号表示压杆

C.10kN

D.