The outside diameter of the pipe is （） the diameter of the bore of the piston rod， the result being that an annular space formed between the piston rod and the pipe.

When the normative method determines the formula for calculating bearing capacity of ground, fa is（ ） A: characteristic value of bearing capacity of ground B: modified characteristic value of bearing capacity of ground C: correction coefficient of bearing capacity of ground D: uncertain

If the negotiation is with regard to any industrial dispute, negotiators should ensure that the distance between the parties is long enough.

The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the （） through which oil is transmitted up the rod to lubricate the small end.

The modern camera lens may be coated with more than ten _______ for each piece of its glass.