皮皮学，免费搜题
登录
搜题
【单选题】
钩虫的主要感染途径为（）A.
食入虫卵
B.
食入感染期幼虫
C.
经输血感染
D.
经蚊虫叮咬感染
E.
感染
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Students shouldn't be given so difficult a problem _____ they can not work out. [ ]
A.
that
B.
which
C.
while
D.
as
【单选题】They are restless / motionless , waiting for the performance to start.
A.
restless
B.
motionless
【单选题】Its an_____difficult problem, which even many professionals cannot work out.
A.
exceedingly
B.
excessively
C.
exclusively
D.
extensively
【多选题】气相色谱进样操作要求“瞬间快速进样”,是因为( )
A.
保证样品“瞬间”完全气化且保证所有样品同时进入色谱柱
B.
保证样品快速进入色谱柱
C.
保证样品与载气均匀混合
D.
使各组分按分子量大小分离
【单选题】Which of the following statements is true?
A.
The boy prefers to go out and, work.
B.
The boy has neither much interest in school nor in work.
C.
The boy is discouraged because he didn't pass the exam.
【简答题】This diagram has been drawn in keeping with a certain logic. Can you work out which number should replace the question mark?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
