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【单选题】
光从真空射入某透明介质中,入射角为60度,折射角为45度,则该介质的折射率为
A.
1.22
B.
1.33
C.
1.44
D.
1.55
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【简答题】张明家来客人了,他招待客人要完成以下几件事: A. 烧水( 10min ); B. 洗茶杯( 3min ); C. 拿茶叶( 1min ); D. 削苹果( 2min ); E. 泡茶( 1min ) . 试分析上述各项工作的先后关系、平行关系,画出网络图,使得时间最短。
【单选题】What day is it when the conversation takes place ?
A.
Saturday
B.
Sunday
C.
Monday
【单选题】下列选项中,( )语句与三元运算符的功能相同。
A.
if…else
B.
foreach
C.
for
D.
while
【单选题】PECVD工艺完成后,硅片表面的镀膜颜色发白,下列哪些措施可以缓解这种情况( )
A.
增加温度
B.
增加镀膜时间
C.
减少压力
D.
增加NH3流量
【简答题】In English the weather is changable. It is a ___ 1 ____ subject of conversation. “ Isn’t it a nice day?” “Do you think it will rain?” “I think it’s going to snow. ” People often ___ 2 ____ a conversat...
【判断题】对于复杂程度较低、组织结构性较强的运动技能,如高尔夫的击球动作,比较适合进行整体练习
A.
正确
B.
错误
【简答题】E-mail is a conversation that does not require an immediate response (like a telephone). If someone calls you on the telephone, you pick it up (unless you have an answering machine, voice mail or you ...
【单选题】下列选项中与语句while( ){if(i>=100) break;s+=i;i++;}功能相同的语句是()
A.
for(;i<100;i++) s=s+i;
B.
for(;i<=100;i++) s+=i;
C.
for(;i<=100;i++, s=s+i);
D.
for(;i>=100;i++, s=s+i);
【简答题】Listen to a conversation and choose the best answer to each question you hear. 1 A. An article about the role culture plays. B. An article about the influences of culture. C. An article about ways to...
【单选题】男士穿西服者,佩带胸花的位置应为()。
A.
左侧领
B.
右侧领
C.
左上袋口
D.
右上袋口
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