9．若回旋線參數(shù)為A＝400，則距回旋線起點(diǎn)400m處的曲率半徑為______m。

A．200                                                            B．300

C.400                                                               D．600

10．下列互通式立交屬全互通式立交的有

A．喇叭形                                                       B．菱形

C.部分苜蓿葉                                                  D．部分定向式

11．下列豎曲線是凹形豎曲線的是

A．i₁＝3％，i₂＝4％                                        B．i₁＝4％，i₂＝3％

C．i₁＝3％，i₂＝2％                                        D．i₁＝－2％，i₂＝－3％

12．下列損壞不屬于瀝青路面的損壞的是

A．車轍                                                          B．反射裂縫

C.低溫開裂                                                      D．傳力桿失效

13．我國(guó)高速公路測(cè)設(shè)中的緩和曲線按傳統(tǒng)選用

A．三次拋物線                                                B．雙紐線

C.回旋線                                                         D．正弦曲線

14．某山嶺區(qū)二級(jí)公路，變坡點(diǎn)樁號(hào)為K5＋030.00，i₁＝5％，i₂＝－3％，豎曲線長(zhǎng)為160m，則豎曲線半徑為______m。

A．2000                                                          B．2400

C.3200                                                             D．4000

15．隔離設(shè)施安裝高度一般為______左右。

A．1.40～1.60m                                               B．1.50～1.70m

C.1.60～1.80m                                                 D．1.70～1.90m

16．設(shè)中央分隔帶寬度為3m，右路緣帶寬度為0.75m，則中間帶的寬度為______m。

A．3.75                                                           B．4.5

C.2.25                                                              D．6.75

17．在高速公路平面定線中，______往往是首選的要素。

A．直線                                                          B．大半徑圓曲線

C．緩和曲線                                                   D．小半徑圓曲線

18．下列指標(biāo)用于評(píng)價(jià)路面結(jié)構(gòu)狀況的是

A．IRI                                                             B．PCI

C.SRV                                                              D．SFC