附墙撑杆平面与附着面的法向夹角不应大于度（）

A.15°

B.10°

C.8°

D.4°

A.0.01mm

B.0.02mm

C.0.05mm

A.45

B.50

C.60D

A.300

B.600

C.450

D.700

A.60

B.50

C.30

A.45°

B.50°

C.60°

D.65°

A.45 °

B.50 °

C.60 °

D.65 °

A.0.025mm

B.0.05mm

C.0.15mm

D.0. 25mm

A.100mm

B.150mm

C.200mm

A.撑杆的梢径不得小于160mm

B.撑杆的梢径不得小于150mm

C.撑杆与电杆的夹角以260最为经济

D.撑杆与电杆的夹角以300最为经济