适用于机器、设备等计提折旧的折旧方法是()。
A.平均年限法
B.行驶里程法
C.年数总和法
D.工作台班法
参考答案:D
根据首字母和句意补全单词。
1. Fill in each b_______ with a word in the list.
2. God c_______ the world.
3. I'd like to have a s_______ room.
4. He s_______ out his arm to take the book.
5. He has beautiful t_______.
核酸分子中核苷酸之间的连接键是()。
A.2′,3′磷酸二酯键
B.2′,5′磷酸二酯键
C.3′,5′磷酸二酯键
D.肽键
E.α–1,4糖苷键