皮皮学，免费搜题
登录
搜题
【单选题】
关于抗感染免疫的叙述，下列错误的是A.
抗体与细菌结合可直接杀死病原菌
B.
细胞免疫主要针对胞内寄生菌的感染
C.
体液免疫主要针对胞外寄生菌的感染
D.
吞噬细胞和体液中的杀菌物质是抗感染的第二道防线
E.
完整的皮肤与黏膜屏障是抗感染的第一道防线
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists cre-ate too much traffic,...
A.
It is extremely important to develop tourism.
B.
Building roads and hotels is essential.
C.
Support facilities are highly necessary.
D.
Planning is of great importance to tourism.
【单选题】Passage 2 Without proper planning, tourism can cause problems. For ex ample, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too muc...
A.
it is extremely important to develop tourism.
B.
Building roads and hotels is essential
C.
Support facilities are highly necessary
D.
Planning is of great importance to tourism
【单选题】Without proper planning, tourism can cause problems. For example, too many tourists can(面性)crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too much traffi...
A.
It is extremely important to develop tourism.
B.
Building roads and hotels is essential. (必不可少的)
C.
Support facilities are highly necessary.
D.
Planning is of great importance to tourism.
【简答题】Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants居民of a country. If tourists create too much traffic,...
相关题目：