发石旋时，灰缝的厚度（） A.上口不得超过12mm，下口不得小于8mm B.上口不得

根据句意及首字母的提示，补全单词。

1. The short man looks o _        , but he is a great scientist.

2. At last, the thief d_      _ out of our eyes. We were very worried.

3. Many policemen were there to s        _ people after the earthquake.

4. Our parents d        _ with our ideas sometimes. But don't worry. Try to show yours to them.

5. Using too much p _       bags is bad for our environment.

死胎是指妊娠多少周胎儿在子宫内死亡：

A．24周

B．20周

C．18周

D．26周

E．28周

灌砂法测定密度时，下部可以略小于上部，以有利于灌砂。( )

能够实现从指定记录集里检索特定字段值的函数是

A．Nz

B．Find

C．Lookup

D．DLookup

简述国家权力与社会相分离的具体表现。