润滑油在使用中对机械设备主要起什么作用?

以下程序的功能是：对输入的一行字符中的数字字符的字面值累加，输出此累加和，
请填空。
#include＜stdio.h＞
#include＜ctype.h＞
main()
char c；
int a，s=0；
while(______)
if(isdigit(c))
a=c-’0’；s+=a；
printf("S=%d"，s)；

质量均为m的两小球A、B间有压缩、短弹簧，弹簧处于锁定状态，两球的大小尺寸和弹尺寸都可忽略，把它们放入固定在水平面上的竖直光滑发射管内，解除弹簧锁定后，B球仍然保持静止，A球能上升的最大高度为R，如图（甲）所示。现在让两球（包括同样锁定的弹簧）沿光滑的半径也为R的固定半圆槽左端的M点由静止开始滑下，如图（乙）所示，到达半圆槽的最低点时解除弹簧锁定，求A球离开半圆槽后能上升的最大高度。

第六部分 同义转换 （共5小题；每小题1分，满分5分）

小题1:The first color TV programme was not broadcast until 1938.

It was_________  ________ 1938 _______ the first color TV programme was broadcast.

小题2:He was astonished to hear they were talking about others’ private information.

__________ __________ him __________ __________they were talking about others’ private information.

小题3:Eventually, stone needles took the place of the simple bian.

Eventually, the simple bian __________ __________ by stone needles.

小题4:If there were no Internet, these people would have fewer avenues to meet people.

__________ __________, these people would have fewer avenues to meet people.

小题5:He struggled to get rid of his fears when he went home alone at night.

He struggled to __________ __________ __________ his fears when he went home alone at night.

患者男性，58岁，上颌牙列缺失，缺失，双侧上颌结节过度增生，量相应牙槽嵴骨尖，远中深龋，远中舌尖缺损，已做完善根管充填，不松动，智齿，近中阻生，牙石（Ⅲ）。

上总义齿制作时，哪个部位可不做缓冲处理（）。

A.切牙乳突

B.腭皱

C.上颌硬区

D.上唇系带

E.颧突

一个管理者应具备的管理能力应包括（）

A.认识问题的能力

B.分析问题的能力

C.解决问题的能力

D.综合处理问题的能力

E.ABC

F.ABCD