Which of the following is not a common type of rise coal haulage ( )? A: Pipeline haulage B: Belt conveyor haulage C: Tramcar haulage D: Autogenous haulage

For the permanent ramp haulage system, the side of slope with haulage ramp is permanent, and another side is a working slope.

The development haulage system is divided into the permanent ramp and .

The is usually laid in haulage way of zone to transport coal.

Which tunnels can be shared by multiple coal seams? （ ） A: Rise and dip B: District cross-cut C: District station D: Haulage way of section

In the strip district, which belongs to the entry? ( ) A: Work face haulage gateway B: Work face air return gateway C: Open-off cut D: Winches

Which of the following is not a major problem to be solved in mine field development method?( ) A: Mining methods B: Shaft (adit) form C: Number of mining levels D: Layout of main haulage roadway

Penny Bauer, Chief Financial Officer of Harrison Haulage, suspects irregularities in the payroll system, and orders an inspection of ‘each and every payroll voucher issued since 1 January 2005’. Five per cent of the payroll vouchers contained material errors. This is an example of ________________.

According to the figure below, which of the following options does not match the serial number and name? ( )[img=583x316]1803a3a9559d2cf.png[/img] A: 1 - haulage roadway B: 2 - air inlet roadway C: 3 - belt conveyor D: 4 - switch, pump station and electrical equipment

Many practical areas of engineering controls designed to mitigate exposure of surface mine workers to all airborne dusts, including silica, are： A: drill dust collection systems B: enclosed cab filtration systems C: controlling dust on unpaved haulage roads D: controlling dust at the primary hopper dump