【简答题】环境类别为二a 类时,独立基础(有垫层,混凝土等级为C30)的最小保护层厚度为( )mm 。
【单选题】对胸膜和肺体表投影的叙述,正确的是( )
【简答题】用适当的词填空。 1. My uncle likes ______ (run) very much. Look! He is running now. 2. Helen wants ______ (play) volleyball with Nancy. 3. Liu Tao ______ (not like ) Science at all. 4.The girl usually ______ ...
【简答题】句型转换,每空一词。 1. Ann is short. She has short straight hair. (合并为一句) Ann is short _______ short straight hair. 2. Michael Jackson is tall and thin . (对画线部分提问) ______ does Michael Jackson _______ _______? ...
【单选题】—Can I my hair colored, Mom? —No. As a student, you ________ do that.
B.
got; should be allowed to
D.
get; shouldn’t be allowed to
【判断题】Remember hair should not fall on the face.记住头发不要绑起来.
【单选题】下列关于脂肪酸的说法正确的是。( )
C.
脂肪酸根据碳原子数的不同可分为短链、中链和长链
D.
根据碳链上双键数,又可把脂肪酸分成饱和脂肪酸和单不饱含脂肪酸两类
【单选题】以下关于IPv4协议描述不正确的是__________。
A.
IP数据报结构中源地址与目的地址是路由器建立路由的重要参考信息
B.
接受端收到IP数据报分片后可以通过片偏移确定其在原始数据报的位置
C.
IP数据报的校验和用于校验全部数据报的有效性