架空线路单元导线部件状态量由弧垂、断股、（）交跨距离、水平距离等组成。 A.散股 B

抗日战争进入相持阶段后，中国人民在华北给日本侵略者以沉重打击的一次军事行动[ ]

A．百团大战

B．平型关战役

C．淞沪会战

D．台儿庄会战

饮食不化，胸脘痞闷，肠鸣泻泄，四肢乏力，形体消瘦，面色萎黄，舌淡苔白腻，脉虚缓。宜选（）。

A.四君子汤

B.参苓白术散

C.补中益气汤

D.归脾汤

E.健脾汤

补全对话。

A: 1 ______ me. Is there a 2 _______ office near here? I want to post a card.

B: Yes. Just go along this street and 3 _______ left. It's on Center Street 4 _______ your right.

A: Is it far 5 ______ here?

B: No, it isn't. it's quite near. It will take you only ten minutes (分钟) go there on foot.

A: By the way, 6 _______ is the bookstore?

B: The bookstore? It's 7 _______ the Eight Street. It's 8 _______ to the supermarket.

A: Can I 9 ______ there?

B: Yes, you can. But it will take you about half an hour to walk there. You had better 10 ______ a bus there.

A: Thank you very much.

B: You're welcome.

1._______ 2._______ 3._______ 4._______ 5._______

6._______ 7._______ 8._______ 9._______ 10._______

有student表和class表，student表的主键是学号，class的主键是课程号。则下列描述的插入操作中，哪一个操作是正确的

A．在student中插入行('102'，'赵民'，'05'，'02')

B．在student中插入行('101'，'赵民'，'04'，'02')

C．先在class表中删除行('03'，'英语'，'李洪亮')然后在student中插入行('105'，'李丽'，'03'，'03')

D．在student中插入行('105'，'李丽'，'03'，'03')

沿进入汽车的方向，在载车板适当位置上装有高度为（）以上的阻车装置或其他有效阻车装置。

A.20mm

B.25mm

C.30mm

D.40mm