皮皮学，免费搜题
登录
搜题
【单选题】
对四环素类抗生素叙述不正确的是( )。A.
母核有四个环
B.
酸碱两性化合物
C.
干燥固体较稳定
D.
在任何PH的溶液中都会发生差向异构化反应
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】某船以18kn航行1000n mile,需要燃油100t。现仅存燃油80t,但至目的港尚有1200n mile的航程。为了使船舶能在不增加燃油的情况下续航至目的港,试求该船应采用的航速 。
A.
15kn
B.
16kn
C.
17kn
D.
18kn
【单选题】某船以18kn航行1000n mile，需要燃油100t。现仅存燃油80t，但至目的港尚有1200n mile的航程。为了使船舶能在不增加燃油的情况下续航至目的港，该船应采用的航速为：
A.
15kn
B.
16kn
C.
17kn
D.
18kn
【多选题】Read the Text A (Para. 9-10) again, and complete the note-taking exercise. Five key questions (Para. 9): 1. Is the institution ? 2. Does the institution have both an online and traditional brick-and-m...
A.
accredited
B.
sufficient student
C.
qualifications
D.
Specially tailored courses
E.
student's success
【单选题】This philosopher and student of Socrates founded the Academy in Athens, the first institution of higher learning in the Western world.
A.
Aristotle
B.
Homer
C.
Plato
D.
Pythagoras
E.
Socrates
【简答题】无三阶互调干扰信道级的选择方法有( )法、( )法和( )法。
【单选题】The monarchy is the oldest institution of government, going back to at least th e_____ century.
A.
7th
B.
8th
C.
9th
D.
10th
【单选题】某船以18kn航行1000n mile,需要燃油100t。现仅存燃油80t,但至目的港尚有800n mile的航程。船舶计划预留燃油20t作为备用,为了使船舶续航至目的港,试求该船应采用的航速 。
A.
15kn
B.
15.6kn
C.
16kn
D.
16.5kn
【单选题】To appreciate the value of e-learning, it is necessary to understand the product of its research analysis, its usefulness, and its impact to the academic institution.
A.
Expository
B.
Argument
相关题目：