福建省政府要求本省各级政府，把自己掌握的信息及履行的职责情况依法及时向社会发布，

有关桥体龈面的说法正确的是()

A．尽量减少龈面与牙槽嵴粘膜的接触面积

B．用于龈面的材料最佳为烤瓷

C．粗糙的龈端易导致菌斑的附着

D．桥体舌侧的龈端可尽量缩小

E．龈端与牙槽嵴粘膜呈压迫接触

地面面积S≤80，高度H≤12米的平顶房间，一只感烟探测器的保护面积为()平米

A.60

B.80

C.100

D.120

缺词填空(5分)

We usually buy things in a shop, a market or a supermarket. Shopping always takes too much t________ . We have to walk around for a long time to look f________ the things we want. Sometimes we have to c________ many heavy shopping bags. We’re always very tired after s_________. Now it’s different from that in the past(过去). We can do many things at h________, we don’t need to go to the shop. We can buy many good and c_______ things on the Internet(因特网), they look nice but don’t cost much. It seems easy and quick, b_______ it sometimes brings us some trouble(麻烦). The clothes you buy on the Internet are d________ from what you want, or the size is too s_______ or too big. You may see many people wear the same clothes in the street. Do you know why? B________ they all buy clothes on the Internet. How interesting!

高度为8m，土的内摩擦角＝10°(N_s＝9.2)，c=25kPa，γ＝18kN/m³的土坡，其稳定安全系数为()。

A．1.6

B．1.0

C．2.0

D．

双子叶植物茎的初生结构自内向外分为

A．皮层、微管柱、表皮

B．表皮、中柱、皮层

C．中柱、皮层、表皮

D．微管柱、皮层、表皮