对于蒸汽和惰性气体可选用不封闭弹簧式安全阀。

— Tom is waiting for you outside the building.

— Oh!I thought he ________. [      ]

A. went  

B. are going

C. had gone  

D. have gone

用所给单词的适当形式填空.

1. Computers are _____ (use) inventions and becoming more popular.

2. Could you tell me where I can _____ (change) money.

3. You may take the elevator to the      _  (two) floor. She is in the office there.

4. Maybe there's someone_____ (call) you just outside your office.

5. The article is very _____ (organize), and it's worth read ing.

下列数组a中，版本较新的能在程序运行时动态调整大小的是( )。．

A．int a[]

B．String[]a

C．a=new ArrayList()

D．a=new Array()

以下疗法，对于二、三期内痔，尤其对纤维性内痔更为适宜的是：

A．贯穿结扎法
B．挂线疗法
C．直肠周围注射法
D．枯痔钉疗法
E．中药外洗

结构性能检验时，对成批生产的预制构件，应按同一工艺正常生产的不超过1000件且不超过（）的同类产品为一批进行检验

A.3个月

B.30天

C.2个月

D.15天